VEVOR Step Drill Bit, 4.76 to 34.93 mm, 9.53 mm 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 projectsLong-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 materialsOptimized 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 fiberglassUniversal 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 alikeWide Application: For materials up to 1/8" (3 mm) thick, this step drill bit for stainless steel works seamlessly on stainless steel, sheet metal, wood, plastic, and fiberglass. It is essential for both home renovation and industrial applications