4.Pressure Angle(α): 14.5°- 30° 5.Accuracy: GB/T6082-2001 Standard Class AA/A/B 6.Coating: TiN/TiAlN 7.Use: Used to ease or remove the load of the addendum fo gear shaving cutter to improve the accuracy of tooth profile. We can 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 satisfy you. You're welcome every time, all the time.