High Speed Steel (HSS) construction for added durability and long life Broken drill bits are a waste of time. Makita Black Oxide Drill Bits are designed for use with today's high-torque drills and impact drivers and engineered for added durability for longer service life. The durable one-piece design is constructed with High Speed Steel (HSS), with a ¼ hex shank for use with impact drivers and Makita Black Oxide Drill Bits are ideal for drilling holes in ferrous metal, wood, plastic, non-ferrous metal and cast iron. Unique Bargains 5pack Masonry Drill Bits, 4mm Concrete Drill Bit 1/4 HSS Impact Driver Drill Bit Makita 10MM Drill Chuck & Key Set 1/4 HEX Shank 198913-8 Drill Bit Plagiarism Login Black oxide coating for added corrosion resistance 1/8" x 12" Black Oxide High Speed Steel Drill Bit Durable one piece design 135° split point geometry for fast starts and reduced walking
