Ultimate Step Drill Bit Set For 7/8 To 1-3/8 Inch Holes With Double Fluted Design, Easy Read Step Markings, 3/8 Inch Hex Shank, Aluminum Titanium Nitride Coating For Longer Life, Size 15 Klein Tools

15-Piece TiN-coated Step Drill Set for 7/8-1 3/8 in Holes
✔️ TiN-coated, double-fluted, 3/8 in hex shank, laser sizes

The 15-piece step drill bit set is designed for making clean, progressively larger holes in metal, plastic, and wood. The double-fluted design helps with chip removal, while the TiN coating extends bit life. This set covers hole sizes from 7/8 inch to 1-3/8 inch and uses a 3/8 inch hex shank for a secure grip in most drill chucks.

✅ Size range: 7/8 in to 1-3/8 in (22.2-34.9 mm)
✅ Coating: Aluminum Titanium Nitride (TiN) for longer life (≈10x)
✅ Double-fluted design for clean cuts and fast chip removal
✅ 3/8 in hex shank for secure grip in drill chuck
✅ Laser-etched size markings for quick hole identification
✅ Non-walking tip for precise entry
✅ 15-piece set for diverse hole sizes

💡 What is a TiN-coated step drill bit best used for?

A handy tool for making clean, stepped holes in metal, plastic, and wood. - Handy for creating progressively larger holes in metal and plastic - TiN coating reduces wear and heat, extending bit life - Laser-etched size marks help you pick the right size fast