Overview Reviews Product Description Power through your drilling jobs with the 5 pc. high-speed steel countersink drill bit set.The precision-ground 82° tip allows you to drill most machinable metal, wood, and plastic.It's built for strength and durability with a m-2 high-speed steel construction and a corrosion-resistant black oxide coating.The unique 5-flute design delivers a smooth, accurate performance.The 1/4" round shank is designed for all handheld and stationary drills. Irwin Tools Catalog Product Videos Custom Field Manufacturing country CN Product Reviews Write a Review Write a Review × Irwin 5 Pc. 82° High Speed Steel Countersink Bit Set 1877791 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *