Check the listing for details. 1/2" Stubby Bit Machine Screw Length Stub Bit Drill Hog Lifetime Warranty 6 Pcs. Condition: New. Listed at 37.99 USD. Drill Hog 1/2" Screw Machine Stubby HI-Molybdenum M7 Drill Bit Includes: 1/2" Stub Length Screw Machine Drill Bit Pack of (6) Stubby Drill Bits Specifications: HI-Molybdenum M7 Steel Stub Length Length: 3.75" 135 Degree Split Point Prevents "Walking" Lifetime Warranty Drill Hog is proud to release the newest technology in drill bits. These bits are made from HI-Molybdenum M7 Steel which has a melting point of 4753° Fahrenheit! These bits will drill through the toughest steel like truck frames, stainless steel, farm implements, spring steel, grade 8 bolts, and more! These drills are screw machine length also called "stubby" or stub length because they average 2" to 4" in length depending on the size. Perfect for the hard to reach areas. Stub drills are harder to break because of the shorter length. They can handle more stress than regular jobber sized drills. Drill Hog includes a Lifetime Warranty to the original purchaser.