Cobalt Drill Bit Set 19 Pcs. - Sparex Part S.168852Cobalt Drill Bit Set 19 pcs. Sparex Part No. S. 168852 Abracs HSS Cobalt Drill Bits are precision ground for high performance. The addition of 5% cobalt into the High Speed Steel increases lifetime, strength & wear resistance keeping the drill bit sharper for longer. A key performance feature is their Split Point cutting head. The Split Point allows the drill bit to instantly grip the material resulting in higher precision, accuracy and significantly