an angled ridges in a diamond pattern on any workpiece for a decorative finish or proof grip. Lathe knurling tool can be rotated and locked to give different patterns of coarse, medium and fine knurling textures. This knurling tool has 1 set of pair of different pitches which gives different patterns as required. Features - Color: Black. - Material: Steel. - Size: 2.50 x 2.50 x 0.70cm/ 0.98 x 0.98 x 0.28 inch. - One knurling linear knurling tool has two directions, one is negative and the other one is positive. - The teeth of the wheels are not only hard, and wear-resistant, but also sharp. The machined parts can be cut quickly. - The surface of the knurling tools is anodized with special trade, anti-rust resistant, high processing efficiency. - These knurling tools are made from steel, which works with strict heat treatment. Rigidity, wear resistance, anti-demolition damage strength. - To pressure patterns during the mechanical process to prevent slipping. Package list: 4 x Knurling Wheels