Drill Hog 1" Center Countersink Reamer Cobalt M42 Includes: 1" Center Countersink Reamer Specifications: 1" Diameter Cobalt M42 Steel 3 Flute Design 82° Degree Flutes Shank Size: 1/2" Tri-Flute Design Cuts Faster and Straighter Lifetime Warranty Drill Hog is proud to release the newest technology in countersink reamer bits. These bits are made from Cobalt M42 steel which has a melting point of 2723 Fahrenheit! This new design features the tri-flute design. The tri-flutes allow the bit to cut faster than standard bits. These bits will drill through the tough steel! Drill Hog includes a Lifetime Warranty to the original purchaser.