Knurl is individually hob-cut to obtain sharp, perfectly formed teeth in every knurl. Consequently theseKnurls produce work of uniform precision. Held within close limits of accuracy for thickness and for diameter of hole, which is always, concentric under hob-cut of manufacture.Cut from high-speed steel, heat-treated, tempered and tested.
Knurl is individually hob-cut to obtain sharp, perfectly formed teeth in every knurl.