Finish: Black Oxide *Material: High Speed Steel *Number in Package: 1 *Packaging Type: Carded *Product Type: Drill Bit *Shank Diameter: *Shank Type: Straight Shank *Sub Brand: *Brand Name: Irwin *Style: *Flute Length: 3-3/16 *Overall Length: 4-1/2 *Drill Size: 5/16 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.