Description:

Specification: Shank Type: Round Shank; Tool Flute Type: Spiral; Rock Well Hardness Grade: 63-66 HRC; Twist Drill Bits Diameter: 2.2mm / 0.09-inch; Shank Diameter: 2.35mm / 0.09-inch; Total Length: 56mm / 2.2-inch; Drill Bit Length: 35mm / 1.38-inch. Material: 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.. Cooling Style: Adapt to several kinds of cooling conditions, for example oil mist, water, oil, air cooling.. Design: 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.. Applications: This twist drill is proper for electric drill, hand electric drill and impact electric drill. Suitable for DIY resin, amber and wood drilling..