Multi-Size Versatility: This step drill bit includes twelve precise sizes from 3/16 to 7/8 inch (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8 inch) for versatile applications

Long-Lasting Sharpness: The step bit is made of cobalt high-speed steel with an AlTiN coating to withstand wear and stay sharp. It is ideal for stainless steel, metal sheets, and other tough materials

Optimized Cutting Angle: Our step drill bit for metal features a 118° tip and four-flute design, ensuring fast chip clearing, less heat buildup, and clean, burr-free holes in wood, plastic, and fiberglass

Universal Quick-Change Shank: Hex shank design fits almost all standard drills for quick, secure bit changes. This metal step drill bit is compatible with a wide range of power tools for DIYers and pros alike