15-Step Step Drill Bit 1-3/8 in Max, Dual Flute, 3/8 in Hex Shank

The Diablo DSD1375S15 15-Step Step Drill Bit is engineered for maximum durability and efficiency, delivering up to 6X longer life and 2X faster cuts in metal, PVC, and plastic. Featuring an innovative 132-degree split point tip, this bit eliminates the need for pre-drilling and ensures fast, on-point starts without bit walking. The optimized dual flute design provides jam-free operation and smooth chip removal, while laser-etched markings allow for easy identification of the 15 distinct hole sizes ranging from 7/8 in. to 1-3/8 in. Designed with a 3/8 in. 3-flat shank, it offers superior stability by preventing slippage in standard drill chucks, making it an essential tool for electrical, plumbing, and HVAC professionals.

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. The innovative split point tip design enables a fast, on-point start resulting in increased durability and up to 4X 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.