Features These 1/4 inch drive SAE flex sockets have a one-quarter 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 / 3/8 in Socket Shape / 12-Point Material / Alloy Steel Finish / Chrome Socket Depth / Standard Drive Type / Hand Drive Size / 3/8 in Measurement Type / SAE Impact Rated / No Standards / AS4984A, ASME B107.110-2012 Number of Points / 12 Overall Length / 1 3/4 in Tether Ready / No