Double Square Bits

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18 Products

Twice as many contact points as square bits to deliver more torque. These bits are also easier to align, and are less likely to slip and strip the drive. They're frequently used to turn fasteners on enclosed trailers and campers.

Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).

Steel—Best for dry environments, since moisture will cause these bits to rust.

		Each
For Hand Tools







	1/4" Hex Shank Size

	No. 1	1"	Steel	2718N11	00000


	No. 2	1"	Steel	2718N12	0000
	No. 3	1"	Steel	2718N13	0000

8-Point Sockets

Quickly position these sockets on square and external 8-point fasteners.

Steel

3/4" Square Drive

8-Point

Socket

For

External

Octagonal

Drives

3/4" Square Drive—_3/4" square drive size sockets work with wheel bearing locknuts on trucks and trailers.

					Standard Clearance
	Drive Size	OD	Socket Shape	For Drive Style	Overall Lg.		Each
3/4" Square Drive



		2 3/8"	2 45/64"	8-Point	External Octagon	3 1/2"	99940A110	000000


		2 9/16"	2 59/64"	8-Point	External Octagon	3 1/2"	99940A120	00000
		2 3/4"	3 13/64"	8-Point	External Octagon	3 1/2"	99940A130	00000
		2 7/8"	3 9/32"	8-Point	External Octagon	3 1/2"	99940A140	00000
		3"	3 31/64"	8-Point	External Octagon	3 1/2"	99940A150	00000
		3 1/8"	3 39/64"	8-Point	External Octagon	3 1/2"	99940A160	00000
		3 1/4"	3 45/64"	8-Point	External Octagon	3 1/2"	99940A170	00000
		3 1/2"	3 63/64"	8-Point	External Octagon	3 1/2"	99940A190	00000
		3 3/4"	4 17/64"	8-Point	External Octagon	3 1/2"	99940A210	00000
		3 7/8"	4 27/64"	8-Point	External Octagon	3 1/2"	99940A230	00000
		4 3/8"	4 63/64"	8-Point	External Octagon	3 1/2"	99940A240	00000


		4 1/2"	5 1/8"	8-Point	External Octagon	3 1/2"	99940A250	00000
		4 7/8"	5 35/64"	8-Point	External Octagon	3 1/2"	99940A270	00000
		94 mm	4 7/32"	8-Point	External Octagon	3 1/2"	99940A310	00000
		100 mm	4 31/64"	8-Point	External Octagon	3 1/2"	99940A320	00000