1.Module: m1-m8 2.Pressure Angle(α): 14.5°- 45° 3.Outside Diameter: 40mm-200mm 4.Accuracy: GB/T6082-2001 Standard Class AA/A/B 5.Coating: TiN/TiAlN Wecan provide all kinds of gear hobs, gear shaper cutters and gear shaving cutters. If you have any requirement, pls contact us. We'll try our best to satifsy you. You're welcome every time, all the time.