Raises 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 knurl pair of different pitches which gives different pattern 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 positive and the other one is negative.- 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 worked with strict heat treatment. Rigidity, wear resistance, anti-demolition damage strength.- To pressure patterns during the mechanical process to prevent slipping.Packing list: 2 x net grain knurling wheel