Involute Spline hobs are used for cutting all kinds of standard and non-standard involute splines as per DIN 5480, 5481 & 5482. These are produced in the pressure angles of 20°, 30°, 37.5° & 45°, with or without shoulder clearances in single and multi-start designs.Accuracy Class: AAAAAA as per DIN 3968, Types: Bore & Shank type, Shoulder Clearance type.