Series 1900 VPH-GDS-XPM Stub Drills TiCN Coated - MetricFor hardened steels 40-45HRC straight shank. V Coating: multi-layered PVD. X Thinning for D up to 4mm, R Thinning for D 4.01mm.Point angle a: 130 for D 2.01 to 4mm, 120 for D 4.01mm.