21-pc. Thunderbolt Black Oxide Drill Bit Set

Thunderbolt, 21 Piece, Black Oxide Drill Bit Set, Convenience & Heavy Duty Performance On The Jobsite, Designed For Extreme Durability & Long Life, Thicker Core Than A Standard Drill Bit To Provide Ultimate Strength & Protect Against Side Load Breakage, Specially Designed Parabolic Flute Form Clears Chips Fast, While The 3 Flat Secure-Grip Shank Holds The Bit Firmly In The Drill Chuck, 135 Degree Split Point Tip Delivers A Precision Start & Prevents Walking For Fast, Accurate Holes, For Drilling On Curved Surfaces, Require Less Effort To Drill Through Metal, Wood & PVC & Are Highly Recommended For Use With Portable Drills, Resilient Case & Includes Bit Sizes (2) 1/16″, (2) 5/64″, 3/32″, 7/64″, (2) 1/8″, 9/64″, 5/32″, 11/64″, (2) 3/16″, 13/64″, 7/32″, 15/64″, (2) 1/4″, 5/16″, 3/8″, & 1/2″.