Description:1. Made of high-speed steel, with great toughness and hardness, not easy to break, easy chip removal, the drill quenching treatment, improve the hardness of use.2. This twist drill is proper for electric drill, hand electric drill and impact electric drill. Suitable for DIY resin, amber, wood, plastic, soft metal drilling and carving.3. Spiral flute design for quick cleaning of chips. The sharp cutting edge provides a smooth cut without glitches. Chip removal is not easy to stick to the tool.4. Adapt to several kinds of cooling conditions, for example oil mist, water, oil, air cooling.
