Description
Brand Name: IRWIN | Material: High Speed Steel | Number in Package: 1 pc. | Overall Length: 6 in. | Packaging Type: Carded | Shank Diameter: 7/16 in. | Shank Type: Square Shank | Sub Brand: Unibit | Usage: Stainless Steel, Copper, Brass Get it all done with one when you choose unibit st | #20 step drill bit | Shank hole enlarging | 3 flatted shank prevents slipping in drill chuck | Ideal for drilling holes into thin materials | Single-flute cutting edge for greater control through steps | Gives the user a true round hole every time | Has 8 steps on the bit | Drills 9/16 in. to 1 in. in 1/16 in. increments
