Cemented Carbide Twist Drill Bits 7.5mm Metal Drill Cutter for Stainless Steel Copper Aluminum Zinc Alloy Iron 4 Pcs

Specifications: Size: 7.5mm / 0.3 Full Length: 85mm / 3.35 Flute Length: 43mm / 1.69 Shank Diameter: 7mm / 0.28 Tip Material: Cemented Carbide Shank Material: HSS (High Speed Steel) Descriptions: 1. Twist drill bits are made of cemented carbide tip for long service life it is more sharp and durable than others. 2. Milled U-flutes with deep-cut spiral delivers fast material removal. Suitable for drilling in tough metal including heavy-duty abrasive alloy and hardened steel 3. Drills clean accurate holes in sheet metal steel copper brass aluminum plastic wood stainless steel and cast iron. 4. Round shank twist drill bit can work with a electric drill (Excluding in the item). Please use low speed when drilling and note the temperature of carbide tip is not too high for extending drill bit life Package: 4 Pcs x Cemented Carbide Twist Drill Bits