Each holder comes with the 60 Degree H insert. Other inserts available individually. Accuracy for centre inner diameter guaranteed to 0.003mm Accuracy after point locking guaranteed to 0.005mm Excellent for individual production of various workpieces through different insert shafts Heat treated point to HRC 60?2 4 types of standard point are available 4-Bearing System: a double row angular contact bearing, a radial ball bearing, and a rear needle roller bearing combine to provide excellent rigidity and superior performance Because of the insert shafts the allowed workpiece weight is limited Mounting taper of point is 1/10 Drop forged (HRC 50?2) body Shaft borehole for easy, efficient dismounting