Feature :1. Strict quality control, excellent cutting performance.2. Bit of high hardness, high strength, good abrasion resistance, not easily broken.3. Hard material is durable,after high frequency welding technology and heat treatment. Item Describe:1. 100% Brand New 2. Type :  Carbide Drill Bit3. Material: Alloy4. Shank diameter:1.5mm5. Drilling diameter:1mm , L:20mm6. Color: Sliver7. For auto glass repair. Package includes1 x Auto Glass Repair Special Drilling Bit