Step Drill Bit, 3/16 To 1-3/8 Inch, 3/8 Inch Triangular Shank, TiAlN Coating Cobalt High Speed Steel, Four Spiral Flute Step Bit For Metal, Stainless Steel, Aluminum, Wood, Plastic, Fiberglass

Multi-Size Versatility: This step drill bit includes nineteen precise sizes from 3/16 to 1-3/8 inch to handle diverse drilling needs. Minimal bit changes help maintain an efficient workflow across projects

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: Triangular 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