Stal D 550 RR (79034)

Diablo's new step drill bits bring exclusive technology to the electrician, plumber and HVAC contractor with fast, accurate cuts and increased stability in thin metals, PVC other plastic materials. Th more→e innovative split point tip design enables a fast, on point start resulting in increased durability and up to 6X longer life. An automated precision grinding process on each step reduces wear and delivers 2X faster cuts. Multiple hole sizes are made easy with laser etched step markings while increased step heights for common hole sizes makes drilling holes more efficient and faster. Designed with a 1/4 inch hex shank, these bits are impact ready and can be used with drills and impact drivers.

Milwaukee selfeed drill bits deliver speed and endurance for repetitive drilling of large holes. Designed for any trade that demands woodcutting for installing pipe and conduit, selfeed bits feed into more→work without pressure. The bits have improved balance with reduced runout, while the hex shank provides a secure gripping surface for the drill chuck. Every Milwaukee selfeed drill bit is coated with a rust inhibitor. Built to last and designed to perform, these selfeed bits are resharpenable so you can keep them cutting like new.

Featuring a heavy-duty, full-length, heat-treated shank for protection against bends and breaks, DeWalt Spade Bits are equipped with high-performance cutting spurs for optimum hole finish.