TEKTON 13-PC. HSS DRILL BIT SET features: Hardened and Tempered M-2 High Speed Steel Construction, Jobbers Length, Polished Flutes Quickly Churn Debris Away From Work, 135 degree Split Points Penetrate on Contact and Reduce Skating and Walking, Multi-Purpose Bits for Wood, Plastic, and Metal, 13-pc. Drill Bit: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", Complete with Metal Index Case.