Features: Engineered with an innovative 4flute design and premium high carbon steel construction, this extended door lock hole saw ensures rapid, smooth drilling in wood and plastic while providing exceptionals durability for long lasting performances. The selfTapping carbides tip enables precise positioning and deeply drilling accuracy, while the 4 flute structure minimizes friction for cleaner holes and reduced bit wear. Designed for carpenters, professional contractors, and enthusiasts seeking reliability hole cutting solution for door hardware installation and woodworking projects. Effortlessly create cleaning cut openings in doors, cabinets, and plastic panels during home renovations, furniture assembly, or lock replacement tasks. Compatibility for 48V+ cordless drills and 800W+ electric tools, this heavy duty woodworking drill bit maintains stability during operate when paired with recommended high power equipment. Specifications: Name: Woodworking Twist Drill Bit Component: High Carbon Steel Bit Diameter:Approx.10mm 11mm 12mm 13mm 14mm 15mm 16mm 17mm 18mm 19mm 20mm 22mm 24mm 25mm 28mm Model:10X160mm,11mm 12X160mm 13mm 14X160mm 15mm 16X160mm 17mm 18X160mm 19mm 20x160mm 22x160mm 24mm 25x160mm 28mm;(Optional) Applicable equipment: rechargeable drill/hand electric drill/bench drill; Features:6.35mm Hexagonal Handle Package Includes: 1pc Twist Drill Bit note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.