Check the listing for details. Drill Hog 1/4" Cobalt Drill Bits M42 1/4" Drill Bit 12 Pack Lifetime Warranty. Condition: New. Listed at 28.49 USD. Drill Hog 1/4" Cobalt M42 Drill Bit - 12 Pack Includes: (12) 1/4" Cobalt M42 Drill Bits Specifications: 1/4" Diameter 4" Overall Length Pack of (12) Drills Premium Solid Cobalt M42 Steel 135 Degree Split Point Prevents "Walking" Tri-Flat Shank Prevents "Slipping" Lifetime Warranty Drill Hog is proud to release the newest technology in drill bits. These bits are made from Premium Solid Cobalt M42 Steel which has a melting point of 2,723° degrees Fahrenheit! These bits will drill through the toughest steel like truck frames, stainless steel, farm implements, spring steel, grade 8 bolts, and more! Drill Hog includes a lifetime warranty to the original purchaser. The Drill Hog Challenge: Drill Hog Drill Bits will out perform and out last any bit you are using now. Put them through the test! Try them out for 60 days and if they don't out perform your current drill bits, we will give you a 100% refund! No questions asked!