This hex shank center drill bit is designed for precise hole starting. It is available in diameters from 1.5 mm to 4.5 mm, made of high speed steel, and coated for added durability. The spiral grip helps keep the bit steady as you begin drilling, improving accuracy in every project. Key benefits - Precise starting hole reduces wandering and helps larger bits stay on target - Coated surface improves wear resistance and extends bit life - Hex shank delivers a secure, anti-slip grip in standard drill chucks - Wide size range covers common pilot holes from 1.5 mm upward Specifications - Size: 1 piece per pack; diameters 1.5–4.5 mm - Material: High speed steel - Finish: Coated - Type: Centering (pilot) drill bit for accurate hole initiation - Compatibility: Fits most electric drills and cordless drills with hex chucks Use scenarios - Drilling precise pilot holes in metal plates, brackets, or housings - Centering holes before using larger drill bits on electrical enclosures - Pre-drilling for screws or fasteners in DIY metalworking projects Notes - Ideal as part of replacement tool accessories for everyday drilling tasks - Choose a diameter within the 1.5–4.5 mm range based on your screw size or subsequent bit This bit provides reliable accuracy, durability, and compatibility for professional and DIY drilling needs.