Perform heavy duty knurling with a CNC lathe to create a grip. These tools use knurls with smooth, rounded edges to press patterns into your material. Knurls are not included, except for internal knurling tools. Right-hand holders move from right to left toward the lathe chuck, and left-hand holders move from left to right away from the lathe chuck. Neutral holders cut in either direction.

Tools for two knurling wheels press more consistent patterns into your material than single-wheel tools, which can push your material off-center. You can also create diamond patterns—common for tool handles, knobs, and fasteners—in one pass rather than two. To do this, just pair a right- and left-hand spiral knurl when you machine your material.

Use internal knurling tools on the inside of holes and bores to reduce slippage between parts. They also improve adhesive bonding by creating more surface area as compared to a smooth surface.

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Knurl material without straining your lathe. Also known as straddle-type knurling tools, these tools pinch both sides of your workpiece to balance out knurling pressure rather than transfer it to your spindle. Use them on soft materials to form patterns into your workpiece for a better grip. A left- and right-hand spiral knurl comes installed, so you can form a diamond pattern—common for tool handles—in one go. When you need to replace a knurl, switch it out without removing the tool from the machine. These tools can be flipped to be used in either a right-hand or left-hand orientation. Right-hand holders move from right to left toward the lathe chuck; left-hand holders move from left to right away from the lathe chuck.

Teeth per inch (TPI) determines how fine your pattern is. 21 TPI will create a coarse diamond pattern suitable for tool handles around 3/4" in diameter.

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Press a grip into your workpiece using your manual lathe. These tools use knurls with smooth, rounded teeth to form grooves on your material. Upon contact with your material, the tool head adjusts to center the knurls for a consistent pattern. Use left and right-hand spiral knurls together to create a diamond pattern—common for tool handles—in one go. When your knurls wear out, you can pop them out and replace them. You can also swap the included spiral knurls for straight ones.

Swivel bump knurling tools have three sets of knurls that you can rotate between: coarse, medium, and fine pitch.

For technical drawings and 3-D models, click on a part number.

Knurl steel and stainless steel without a lathe. Form knurling presses grooved patterns into a workpiece to improve the grip. Use left- and right-hand spiral knurls together to create a diamond pattern.

Internal knurling tools improve the grip of the inside of a hole, helping inserted parts stay in place and adhesives stick better.

Teeth per inch (TPI) determines how fine your pattern is. The higher the number, the smoother, more closely spaced your pattern will be. A tool handle is usually knurled with 30 TPI. A heavy duty handle is usually knurled with 15 TPI, resulting in a coarse grip that requires gloves.