Large Size 3-Piece Titanium Step Drill Bit Set 1-3/8" - 3/4" - 1/2" HSS
Made with drop forged heat treated high speed steel (HSS) with titanium nitride coating for longer life time. High speed, titanium nitride coated steel Designed for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.