All steel construction Black oxide finish resists rust Hex base fits standard drill chuck or 1/4 inch nut driver Designed for accurate installations Manufactured in the United StatesYou promised your dad you would install a sling on his favorite rifle, that he got from his father, for the next hunting season. You found the right swivel set and your ready to start, all you need is a little confidence and the Grove Tec Stud Installation Toolto make the job trouble free. Each tool is made to exacting standards out of durable steel in America. The black oxide finish means it won't rust and will stand up to a lifetime of use. The hex base fits all standard drill chuc Mfg: Grovtec Us SPECS: Steel materials, Black oxide finish, Fits either standard drill chuck or 1/4-inch nut driver.