Performance Tool 3-piece step drill set designed for V-twin motorcycle builds and repairs. Each bit replaces up to 17 individual drill sizes (1/8" through ¾"), cuts tool inventory and setup time while automatically de-burring holes as you drill. Features 3-bit set replaces 17 individual drill bits (1/8" to ¾") ¼" hex shank, titanium nitride coated high-speed steel Automatically de-burrs holes while drilling Works on metal, wood, plastic, and fiberglass Starts on contact — no center punch needed Lifetime warranty Specifications Brand: Performance Tool Manufacturer Part #: W9003 UPC: 039564191671 Length: 7.9 in Width: 5.1 in Height: 0.2 in Weight: 0.29 lbs Country of Origin: China (Mainland) Fitment Suitable for V-twin motorcycle builders and mechanics performing custom fabrication, repairs, and assembly. Frequently Asked Questions What size range does this 3-piece set cover? 1/8" through ¾". The three bits replace 17 individual drill sizes, so you carry fewer tools. Can I use these in a regular hand drill or cordless drill? Yes — the ¼" hex shank works in any drill chuck that accepts that size. Do I need to use a center punch before drilling? No. Step drills start on contact without a center punch, which saves time and reduces marking errors. What materials can I drill with these? Metal, wood, plastic, and fiberglass — versatile for most motorcycle fabrication and repair tasks. Is there a warranty? Yes — Performance Tool backs these with a lifetime warranty.