1.Module: 1.25 2.Material: Powder Metallurgy 3.Number ... Powder Metallurgy Material , O.D. 70mm, Bore 32mm, Module 1.25, TiAIN Pre-shaving Gear Hob Technical Specification1 ... . Module: 1.252. Material: Powder Metallurgy3. Coating: TiAIN4. Accuracy: Class ... Powder Metallurgy Material OD 70mm Inner Bore 32mm Module 1.25 TiAIN Pre-shaving Gear Hob