Overview Reviews Product Description This Irwin 18-piece black oxide drill bit set includes drill bits with a black oxide surface to resist corrosion.The 135° split point helps prevent walking for smooth control.These powerful drill bits come in a durable rubber-sided case for added impact resistance, and the sliding latch design provides added security.The pro set case features a full-length metal hinge pin for durability and easy-to-read markings for quick drill bit identification. Irwin Tools Catalog Product Videos Custom Field Manufacturing country CN Product Reviews Write a Review Write a Review × Irwin 18 Pc. Black Oxide Metal Index Drill Bit Set 314018 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *