Check the listing for details. 6 Pc Step Drill Bit Set Step Bit Molybdenum UNIBIT Lifetime Warranty Drill Hog®. Condition: New. Listed at 79.99 USD. Drill Hog 6 Pc Jumbo HI-Molybdenum M7 Step Drill Bit Set Includes: 6 Pc Jumbo Step Drill Bits Included Sizes: 1/8" - 7/8" (13 Steps) Step Sizes: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" 3/16" - 7/8" (12 Steps) Step Sizes: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" 7/16" - 1-1/8" (12 Steps) Step Sizes: 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8" 9/16" - 1" (8 Steps) Step Sizes: 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" 1/4" - 1-3/8" (10 Steps) Step Sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" 13/16" - 1-3/8" (10 Steps) Step Sizes: 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8", 1-3/16", 1-1/4", 1-5/16", 1-3/8" Specifications: HI-Molybdenum M7 Steel Shank Size: 3/8" Dual Flute Design Drills Faster and Deburrs Tri Flat Shank Prevents "Spinning" in the Chuck Lifetime Warranty Drill Hog is proud to release the newest technology in step drill bits. These bits are made from HI-Molybdenum M7 Steel which has a melting point of 4,753° degrees Fahrenheit! Features a new Dual Flute design to drill 17% faster and remove more material than standard step drills. This new flute design also automatically deburrs leaving a clean hole. 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.