1PCS 17.6mm 17.7mm 17.8mm 17.9mm 18mm HSS Reduced Straight Crank Twist Drill Bit Shank Dia 12.7mm 1/2 Inch 17.6 17.7 17.8 17.9 18(17.8mm)

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.

• Widely Applicable Scenarios:Suitable for a variety of scenarios such as industrial, home repair, woodworking, metal processing, etc. Ideal for professional craftsmen and DIY enthusiasts to meet a variety of drilling needs.
• High quality HSS material:Made of high speed steel (HSS) with excellent wear resistance and hardness to ensure that it remains sharp for a long time, suitable for a wide range of materials such as metal, wood and plastic.
• High Precision Size Options:Provide a wide range of diameter options, including 17.6mm, 17.7mm, 17.8mm, 17.9mm and 18mm, to meet different drilling needs, suitable for precision machining and high-precision work.
• Straight Shank Twist Drill Bit with Reduced Friction:Straight Shank Twist Drill Bit design effectively reduces friction and heat build-up during drilling, prolongs drill bit life, and improves the smoothness and precision of drilling.
• 12.7mm (1/2 inch) Straight Shank Design:12.7mm (1/2 inch) straight shank design is compatible with most standard drill chucks, easy to install and stable, reduces wobble when drilling and improves work efficiency.