Dormer Pramet A520 1/2 Inch HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897130 degree thinned point helps with self centering and reduces the push force required; Titanium Nitride coating increases service life of the drill, improved performance when drilling harder materials; Convex Cutting Edges helps break chips easier to aid removal and allow increased cutting speed and feeds.; Premium HSS material can be used for drilling many materials including steel, aluminium, stainless steel; High performance drill capable of