Check the listing for details. Drill Hog® 3 Pc Cobalt M42 Step Bit Quick Change Hex Shank Lifetime Warranty. Condition: New. Listed at 56.99 USD. Drill Hog® 3 Pc Cobalt Step Bit Spiral Flute Quick Change Hex Shank Includes: 3/16" to 1/2" Cobalt M42 Step Bit1/8" to 1/2" Cobalt M42 Step Bit1/4" to 3/4" Cobalt M42 Step Bit Specifications: Cobalt M42 Step BitsQuick Change Hex ShankFits Impact Drivers and Cordless Drills Spiral Flutes For Faster Cutting Lifetime Warranty Drill Hog is proud to release the newest technology in step drill bits. These bits are made from Cobalt M42 steel which has a melting point of 2723 Fahrenheit! This new design features the exclusive spiral flute design. The spiral flutes allow the bit to cut 27% faster than standard step drill bits. 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.