COMOWARE Step Drill Bit, 12 Sizes from 3/16" to 7/8", High Speed Steel Step Bit with 2 Straight Flutes, 3-Flat Shank, Steps Bits for Metal, Aluminum/Wood/Plastic/Iron, Unibit for Electricians & DIY

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Durable M2 HSS Step Drill - Engineered with 50% more Tungsten and 150% increased Molybdenum, this unibit step drill bit enhanced by vacuum heat treatment and Nitride hardening for industrial-grade metal drilling performance. Multi-Material Performance – This step drill bit set effortlessly drills through steel sheets, aluminum, wood, and plastic with clean holes. The step bits are perfect for DIY home projects and professional building/engineering applications. Two Straight Flutes stepped drill bit - The dual-flute design ensures faster chip removal and cleaner holes. This step drill bits for metal provides smoother cutting while efficiently evacuating chips for peak drilling performance. Tri-Flatted Shank Step Bit Set - These professional step drill bits feature 3 precision-flatted shanks for maximum grip, eliminating slippage under high torque. The enhanced design ensures secure clamping in pistol drills. Size Includes - This metal step drill bit drills 12 sizes (3/16” to 7/8") without bit changes—laser-etched markings on the unibit allow instant size identification for precision metalworking.