& Material: SteelColor: Silver This 10 Pieces White Steel Drill Bits are for DIY grinding and punching (wood, metal, polishing mold purposes). These are white steel drill bits for Electric Grinding Accessories. It can be used for drilling such as metal, plastic, aluminum and wood, good wear resistance, puncture strength is strong. Features: Can be used for punching, such as metal, plastic, aluminum and wood. Good wear resistance. High working efficiency, excellent punching effect and long service life. Convenient for drilling, simple to use, safe and reliable. Widely used in precision punching and slotting technology, such as vajra bodhi bracelet olive nuclear nut punching. Specifications:Diameter: 0.5; 0.6; 0.8; 1.0; 1.2; 1.5; 1.8; 2.0; 2.5; 3.0mm/0.02; 0.02; 0.03; 0.04; 0.05; 0.06; 0.07; 0.08; 0.10; 0.11in Diameter Length0.5mm 23mm0.6mm 29mm0.8mm 35mm1.0mm 34mm1.2mm 43mm1.5mm 49mm1.8mm 51mm2.0mm 51mm2.5mm 60mm3.0mm 61mmNo Retail Package Quantity: 10pcs (1 set)Note:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 10pcs x White Steel Drill Bits