Irwin 5/16in Turbomax Drill Bit

High performance metal spot weld drill. Works well on curved surfaces.

Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bits. High speed steel features a black body and gold flute. Self-centering TURBOMAX tip for clean entry and fast starts; stays sharp longer. Three flatted shank on 3/16" and above for better chuck grip.