STEP DRILL BIT 13STEPS *Brand Name: Diablo *Drill Size: 1/2 in. *Overall Length: 3-1/32 in. *Material: Metal *Product Type: Impact Step Drill Bit *Shank Type: Hex Shank *Number in Package: 1 pk *Packaging Type: Carded *Shank Diameter: 1/4 in. *Number of Steps: 13