1PCS 21.6mm 21.7mm 21.8mm 21.9mm 22mm HSS Reduced Straight Crank Twist Drill Bit Shank Dia 12.7mm 1/2 Inch 21.6 21.7 21.8 21.9 22(21.6mm)

Shank Diameter: 1/2" about 12.7mm Material: HSS Packing: single installationModel Number : Standardlength StandardDIY Supplies MetalworkingMaterial High Speed SteelType Twist Drill BitUse Metal DrillingAttention1. Please note that the colour may vary due to different displays.2.Please allow 1-2mm error manual measurement, please make sure you don't mind before bidding.

• High-quality HSS high speed steel material: made of high-strength HSS (high speed steel) with excellent wear resistance and heat resistance, ensuring that it remains sharp even after long-time use, suitable for a wide range of materials, such as metal, wood, plastics and so on.
• Multi-functional application scenarios: suitable for industrial, home repair, woodworking, metal processing and many other scenarios, ideal for professional craftsmen and DIY enthusiasts.
• 12.7mm (1/2 inch) straight shank design: 12.7mm (1/2 inch) straight shank design, compatible with most standard drill chucks, easy to install and stable, suitable for high-intensity drilling tasks.
• HIGH PRECISION SIZE CHOICE:Provide a variety of size choices, including 21.6mm, 21.7mm, 21.8mm, 21.9mm and 22mm to meet different drilling needs, suitable for precision machining and high-precision work.
• Straight Shank Reduction Design, Reducing Friction: straight shank reduction design effectively reduces friction and heat build-up during drilling, prolonging the life of the drill bit while improving drilling efficiency.