Material: HSS Usage: Worm Module: M2 ~ M8 Type: Worm Wheel Hob/Worm Gear Hob Material: HSS and Tungsten carbide Coating: TIN/TIALN/TICN Module: Rising Stem Worm Wheel Gear Hob: M1 ~ M16; Hole Worm Wheel Hob: m1 ~ M30 Accuracy: ClassA, B, C Certificate: ISO9001 (2008) Machine Type: Gear Hobbing Machine Package: Oil paper + Paper box + Carton Show More