◆ For super abrasive resistance in tough metals
◆ Heavy duty spiral flute design produces faster chip ejection
◆ 135-degree split point reduces feed pressure for easier penetration without work hardening
◆ Material: HSS, HSS-E.Surface finish: bright finish, black oxide, TiN coated
◆ Shorter cutting lips reduce torque for drilling in high tensile strength materials. Ideal for use with screw extractors.