8PCS Fractional Cobalt Silver and Deming Drill Bits Set HSSCO M35 S&D Twist D
S&D Black Gold cobalt drill bits are designed for extreme durability and long life. A specially designed parabolic flute form clears chips fast, while the...
Drill America D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case X
Set contains 29 m42 Cobalt Drill Bits sizes 1/16″ – 1/2″ x 1/64 increments. Cobalt Drills are effective in drilling tough, high tensile strength materials...
