M35 High Speed Steel Cobalt Twist Drill

1. Made of high-quality M35 high-speed steel, it has excellent heat resistance and hardness, strong wear resistance and longer service life.
2. The unique double-headed double-edged structure extends the service life, saves costs, and is suitable for industrial batch use.
3. The drill bit is processed by a full grinding process, with high surface finish, smooth chip removal, and more accurate drilling.