Four Spiral Flute Cobalt Step Drill Bit Set Pro Max Three Piece One Eighth to Seven Eighth Inch Hex Shank Impact Ready Unibit for Metal Stainless Steel Aluminum Wood Plastic Great for DIY Pros

Three-Piece M35 Cobalt Step Drill Bit Set, 1/8-7/8 in
✔️ Includes 4-flute TiAlN-coated M35 cobalt bits, 1/8-7/8 in size

This three-piece step drill bit set is designed for metalworking and DIY projects, delivering clean, quick holes in stainless steel, aluminum, copper, wood, and plastic. The hex shank is built to fit into impact drivers for handy, on-the-job reliability in both professional shops and home garages.

✅ Four spiral flute design for faster, smoother cutting
✅ TiAlN coating increases wear resistance and cutting speed
✅ M35 cobalt HSS step drill with 34 total steps from 1/8" (3 mm) to 7/8" (22.2 mm)
✅ Hex shank compatible with drills and impact drivers for handy use
✅ 100% warranty refund or replacement if not satisfied

💡 What is a step drill bit used for? Handy tool for expanding holes in metal, wood, and plastic.

- Expands holes from small to large diameters in a single bit - Handy for sheet metal, aluminum, copper, and plastics - TiAlN coating extends tool life under high speed drilling - Hex shank ensures a tight fit in drills and impact drivers