Finish: *Material: High Speed Steel *Number in Package: 1 *Packaging Type: Carded *Product Type: Step Drill Bit *Shank Diameter: 1/4 *Shank Type: Square Shank *Sub Brand: Unibit *Brand Name: Irwin *Style: *Flute Length: *Overall Length: *Drill Size: 1/8 to 1/2 Size: No. 1 *Vendor Internet Sales Policy: Sale of this product on third-party online marketplaces (eg. Amazon, eBay, Walmart) or member-owned websites is prohibited without direct written authorization from Stanley Black & Decker.