Features: 1. Straight round shank. 2. M35 high speed steel with cobalt, super hard. 3. Smooth surface to reduce friction, sharp blade for fast drilling hole. 4. Wear-resistant with long service time. 5. Perfect for drilling metals and wood, such as: aluminum, iron, stainless steel. 6. Suit to use with hand drill chuck, bench drill, radial drill etc. Specification: Meterial: High speed steel M35 Coating: Cobalt Shank: Round Package Included: 1Set Twist Drill Bit Set.
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