Premium grade drill bits are manufactured from a high grade Molybdendum high speed steel, that has high vanadium content. Performance drill bits are salt nitride treated, actually penetrating the...
29 Piece Set Includes 1/16" to 1/2" by 64ths drills with 3/8" Reduced shanks. Black Oxide Drill Bits Are Manufactured From Industrial High Speed Steel, Surfaced Treated For High Performance And Long...
Premium grade Drills are manufactured from a high grade Molybdenum high speed steel, that has high vanadium content Performance Drills are salt nitride treated, actually penetrating the tools...