Twist Drill Bits - Set of 21 - Cobalt Alloy Steel

Twist Drill Bits - Set of 21 - Cobalt Alloy Steel

This Cobalt Alloy twist drill bit set has 21 bits from 1/16" to 3/8" in 64th increments. Metal index case with hinged lid has bit sizes clearly marked for keeping bits organized.

Since Cobalt Alloy bits are heat and stress resistant, they are great for drilling in tough materials like steel. The 135° split point reduces the tendency of the bit to drift. Cobalt Alloy bits will retain their edge sharpness longer than normal HSS bits.