Selected from high strength metal, this drill bit increases wear resistance by 60% and extends life by 50% compared to traditional steel tools, reducing frequent replacements for professional Ideal for door installation, furniture making, and woodworking projects, addressing and hole size needs for carpenters and enthusiasts This drill bit is easy to carry for on site or home use, solving portability issues of heavy traditional tools, perfect for mobile professional Secure hexagonal Shank Design: The unique hexagonal shank ensures firm grip with power tools, slippage for stable and precise drilling, suitable for both technicians and household users during detailed work The alloy threaded extended hexagonal shank drill bit boosts drilling speed by 40% with thread cutting design, perfect for wood doors,, and boards from 4mm to 15mm holes, ideal for home renovation and furniture assembly, Manufacturer: ERRORY