Turbomax 3/8 in Reduced Shank High Speed Steel Drill Bits, 1/2 in

Features: Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bits | Three-flatted shank design provides better chuck grip and reduces slippage | Ideal for use in keyless chucks | Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance | 3/8" reduced shank fits all 3/8" drills