xiluuyou HSS Titanium Coated Step Drill Bit 3-12mm, Straight Flute 1/4 Inch Hex Shank Multi Size Hole Cutter for Metal Wood Plastic PVC, Compatible with Cordless & Impact Driver

【Wide Drilling Range 3-12mm】- Precision engraved size marks cover 3/4/6/8/10/12mm. One drill bit replaces multiple single drill bits for quick drilling and hole expanding, ideal for DIY and professional repair work. 【Anti-slip 1/4" Hex Shank】- Standard hex shank fits most cordless drills, electric screwdrivers and quick-change holders. Effectively prevents slipping during high-speed drilling for stable and safe operation. 【Straight Flute & Titanium Coating】- Straight flute design enables fast chip removal to avoid clogging and overheating. Titanium coating reduces friction, resists rust and wear to extend service life. 【Multi-material Application】- Suitable for thin steel, aluminium, copper, plastic, PVC pipes and softwood. Perfect for electrical installation, plumbing, vehicle modification and home renovation projects. 【Durable HSS High Speed Steel】- Made of premium HSS steel with heat treatment, featuring high hardness and good toughness. Produces burr-free smooth holes for repeated long-term use.