Descriptions:1. Twist drill bits are made of cemented carbide tip for easier drilling into any hard objects, long service life, it is more sharp and durable than others.2. Milled U-flutes with deep-cut spiral deliver fast material removal. Suitable for drilling in tough metal, including abrasive alloy and hardened steel.3. Suitable for drilling of stainless steel, die steel, titanium alloy, cast steel, iron, aluminum alloy and copper.4. Round straight shank twist drill bit can work with an electric drill (electric drill not included). Please use low speed when drilling and note the temperature of carbide tip is not too high for extending drill bit life.Specification:Cutting Diameter: 6mm / 0.24"Shank Diameter: 6mm / 0.24"Cutting Edge Length: 70mm / 2.76"Overall Length: 120mm / 4.
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