These 1" drive SAE impact sockets come with a one-inch square drive that's compatible with drive tools of the same size. - Sockets come in sizes that are measured in inches and fractions of an inch to fit fasteners with an SAE (inch) size head. Socket Size / 1 1/8 in Socket Shape / 6-Point Drive Type / Impact Drive Size / 1 in Compatible Fastener Type / Bolts, Screws, Studs Material / Alloy Steel Finish / Black Oxide Impact Rated / Yes Socket Depth / Standard Socket Length / 2 5/8 in Measurement Type / SAE