功能

• 3 Layer Quenching Techniques • Ideal twist shape and special surface treatment dramatically improve rigidity and chip expulsion, increasing the life of pilot drills and insert chips by 3 times.
• With the pilot drill, there is no loss of cutting edge due to vibration.
• Powerful drilling at high speed cutting 120~150 m/min with light torque.
• Uses a square insert chip with low resistance.