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    115 Products

    Long-Life Grinding Bits for Nonmetals

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 3.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 5.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 6.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 7.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 8.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 9.

    Style

    1

    Style

    2

    Style

    3

    Style

    4

    Style

    5

    Style

    6

    Style

    7

    Style 8

    Style

    9

    The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.
    Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 3.

    Style

    3

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    10.03"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver4376A11000000
    10.03"0.19"96,000Diamond2 1/4"120 (Smooth) Silver4490A7500000
    10.04"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver4376A1200000
    10.04"0.19"96,000Diamond2 1/4"120 (Smooth) Silver4490A7600000
    10.05"0.08"100,000Diamond2 1/4"120 (Smooth) Silver4376A1300000
    10.05"0.19"96,000Diamond2 1/4"120 (Smooth) Silver4490A7700000
    10.06"0.12"100,000Diamond2 1/4"120 (Smooth) Silver4376A3100000
    10.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A1400000
    10.07"0.12"100,000Diamond2 1/4"120 (Smooth) Silver4376A1500000
    10.08"0.16"100,000Diamond2 1/4"120 (Smooth) Silver4376A1600000
    10.08"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A1500000
    10.09"0.16"100,000Diamond2 1/4"120 (Smooth) Silver4376A1700000
    10.1"0.16"100,000Diamond2 1/4"120 (Smooth) Silver4376A1800000
    10.11"0.16"60,000Diamond2 1/4"120 (Smooth) Silver4376A1900000
    10.12"0.16"60,000Diamond2 1/4"120 (Smooth) Silver4376A2100000
    10.13"0.2"60,000Diamond2 1/4"120 (Smooth) Silver4376A2200000
    10.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A1700000
    10.14"0.2"60,000Diamond2 1/4"120 (Smooth) Silver4376A2300000
    10.16"0.2"60,000Diamond2 1/4"120 (Smooth) Silver4376A2400000
    10.16"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A7900000
    10.19"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A2100000
    11/4"0.03"46,000Diamond2 1/4"120 (Smooth) Silver4490A5300000
    11/4"0.06"46,000Diamond2 1/4"120 (Smooth) Silver4490A5500000
    11/4"0.13"46,000Diamond2 1/4"120 (Smooth) Silver4490A5700000
    11/4"1/4"100,000Diamond2"150 (Smooth) Silver4490A10700000
    11/4"0.31"46,500Diamond2 1/4"120 (Smooth) Silver4490A2300000
    11/4"1/2"100,000Diamond2"150 (Smooth) Silver4490A10800000
    10.31"0.31"46,500Diamond2 1/4"120 (Smooth) Silver4490A6600000
    13/8"1/8"40,000Diamond2 1/4"120 (Smooth) Silver4490A10600000
    13/8"1/4"90,000Diamond2"150 (Smooth) Silver4490A10900000
    13/8"3/8"90,000Diamond2"150 (Smooth) Silver4490A11100000
    30.14"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A6500000
     
    1/4" Diameter Shank
    10.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A1100000
    10.09"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A7800000
    10.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A1300000
    10.19"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A1600000
    10.2"0.24"60,000Diamond2 1/4"120 (Smooth) Silver4376A2800000
    10.24"0.28"60,000Diamond2 1/4"120 (Smooth) Silver4376A2700000
    11/4"0.31"46,500Diamond2 1/4"120 (Smooth) Silver4490A1800000
    10.26"0.28"60,000Diamond2 1/4"120 (Smooth) Silver4376A4100000
    10.31"0.31"46,000Diamond2 1/4"120 (Smooth) Silver4490A1900000
    10.32"0.32"30,000Diamond2 1/4"120 (Smooth) Silver4376A4200000
    10.34"0.32"30,000Diamond2 1/4"120 (Smooth) Silver4376A4300000
    10.38"0.31"46,500Diamond2 1/4"120 (Smooth) Silver4490A2200000
    10.39"0.39"30,000Diamond2 1/4"120 (Smooth) Silver4376A4400000
    11/2"1/4"70,000Diamond2"150 (Smooth) Silver4490A11200000
    11/2"0.31"30,000Diamond2 1/4"120 (Smooth) Silver4490A2400000
    11/2"1/2"70,000Diamond2"150 (Smooth) Silver4490A11300000
    10.59"0.39"20,000Diamond2 1/4"120 (Smooth) Silver4376A4600000
    10.73"0.39"20,000Diamond2 1/4"120 (Smooth) Silver4376A4700000
     
    Barrel
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 9.

    Style

    2

    Style

    4

    Style

    9

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Grout, Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    43/32"5/16"40,000Diamond2 1/2"120 (Smooth) Silver4490A101000000
     
    1/4" Diameter Shank
    93/32"5/16"40,000Diamond2 1/2"120 (Smooth) Silver4490A10200000
    93/16"5/16"40,000Diamond2 1/2"120 (Smooth) Silver4490A10300000
     
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    20.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A6800000
    20.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver4490A3400000
    21/4"0.31"46,000Diamond2 1/4"120 (Smooth) Silver4490A3600000
    20.31"0.31"46,000Diamond2 1/4"120 (Smooth) Silver4490A6700000
    40.06"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A7100000
    40.08"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A7200000
    40.11"0.31"96,000Diamond2 1/4"120 (Smooth) Silver4490A6400000
     
    1/4" Diameter Shank
    20.38"0.31"46,000Diamond2 1/4"120 (Smooth) Silver4490A2500000
    21/2"0.31"30,000Diamond2 1/4"120 (Smooth) Silver4490A2600000
     
    Flat-Top Cone
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 8.

    Style 8

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/4" Diameter Shank
    80.19"0.1"18,600Diamond2"120 (Smooth) Silver4490A29000000
    81/4"0.1"18,600Diamond2"120 (Smooth) Silver4490A3100000
    81/2"0.2"30,000Diamond2"120 (Smooth) Silver4490A3200000
     
    Taper
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    5

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    55/32"5/8"40,000Diamond2 1/4"120 (Smooth) Silver4490A105000000
    50.16"0.23"96,000Diamond2 1/4"120 (Smooth) Silver4490A5900000
    50.17"0.14"96,000Diamond2 1/4"120 (Smooth) Silver4490A5800000
    50.19"0.38"96,000Diamond2 1/4"120 (Smooth) Silver4490A6100000
     
    Ball
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 6.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 7.

    Style

    6

    Style

    7

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    60.06"0.06"96,000Diamond2 1/4"120 (Smooth) Silver4490A42000000
    60.09"0.09"96,000Diamond2 1/4"120 (Smooth) Silver4490A4400000
    60.13"0.13"96,000Diamond2 1/4"120 (Smooth) Silver4490A4500000
    60.19"0.19"96,000Diamond2 1/4"120 (Smooth) Silver4490A4600000
    61/4"1/4"46,000Diamond2 1/4"120 (Smooth) Silver4490A4700000
    60.38"0.38"46,000Diamond2 1/4"120 (Smooth) Silver4490A4900000
    71/32"1/32"40,000Diamond2 1/4"120 (Smooth) Silver4490A10400000
     
    1/4" Diameter Shank
    61/2"1/2"30,000Diamond2 1/4"120 (Smooth) Silver4490A2700000
     

    Long-Life Grinding Bits for Metals

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Metals .
    Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.
    Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Head
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Steel, Stainless Steel, and Iron
     
    1/8" Diameter Shank
    0.03"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver4338A12000000
    0.04"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver4338A1100000
    0.05"0.08"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1300000
    0.06"0.12"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1400000
    0.07"0.12"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1700000
    0.08"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1500000
    0.09"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1600000
    0.1"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1800000
    0.11"0.16"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A1900000
    0.12"0.16"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A4100000
    0.13"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A4200000
    0.14"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2100000
    0.16"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2200000
    1/4"1/4"50,000Boron Nitride2"150 (Smooth) Green4338A10100000
    1/4"1/2"50,000Boron Nitride2"150 (Smooth) Green4338A10200000
    3/8"1/4"50,000Boron Nitride2"150 (Smooth) Green4338A10300000
     
    1/4" Diameter Shank
    0.2"0.24"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2400000
    0.24"0.28"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A4300000
    0.26"0.28"60,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2600000
    0.32"0.32"30,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2700000
    0.34"0.32"30,000Boron Nitride2 1/4"120 (Smooth) Silver4338A2800000
    0.39"0.39"30,000Boron Nitride2 1/4"120 (Smooth) Silver4338A4400000
    0.47"0.39"30,000Boron Nitride2 1/4"120 (Smooth) Silver4338A300000
    0.59"0.39"20,000Boron Nitride2 1/4"120 (Smooth) Silver4338A4500000
    0.73"0.39"20,000Boron Nitride2 1/4"120 (Smooth) Silver4338A3200000
     

    Miniature Long-Life Grinding Bits for Nonmetals

    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 1.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 3.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    1

    Style

    2

    Style

    3

    Style

    4

    Style

    5

    Made with diamond abrasive, these bits are extremely hard and last longer than tungsten carbide. They have a small shank and head for precise and intricate jobs. To extend the life of these bits and improve their finish, use a water- or oil-soluble mist or coolant. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
    Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
    Cylinder
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 3.

    Style

    3

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    30.094"0.157"25,000Diamond1 5/8"100 (Smooth) Silver5548N12000000
    30.181"0.157"25,000Diamond1 5/8"100 (Smooth) Silver5548N1100000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel4344A38000000
    Inverted Cone
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    10.047"0.059"75,000Diamond1 3/4"120 (Smooth) Silver5548N21000000
    10.071"0.059"55,000Diamond1 3/4"120 (Smooth) Silver5548N2200000
    10.374"0.16"25,000Diamond1 5/8"100 (Smooth) Silver5548N1400000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel4344A38000000
    Taper
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    4

    Style

    5

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    40.098"0.393"25,000Diamond1 3/8"100 (Smooth) Silver5548N15000000
    50.123"0.354"25,000Diamond1 3/8"100 (Smooth) Silver5548N2300000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel4344A38000000
    Ball
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 2.

    Style

    2

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    20.051"0.051"70,000Diamond1 3/4"100 (Smooth) Silver5548N17000000
    20.075"0.075"45,000Diamond1 5/8"100 (Smooth) Silver5548N1600000
    20.091"0.091"40,000Diamond1 5/8"100 (Smooth) Silver5548N1800000
    20.138"0.138"25,000Diamond1 5/8"100 (Smooth) Silver5548N1900000
    20.169"0.169"25,000Diamond1 5/8"100 (Smooth) Silver5548N1300000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel4344A38000000
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