Norseman by Viking Drill and tool (6 per pack) jobber length drill bit, Type19/64, Type 240 UB ,135 split point. Special Hi-Molybdenum tool steel. 19/64" Diameter, and 4 3/8" Overall Length, 135 Degree Split Point - for fast penetration & accuracy without center punch. Gold Surface treated for maximum lubricity. Heat treated & nitro-carburize finished to be measurably harder than high-speed steel (05730)