Stanley STMT73374-8B 1/2 Inch Drive Hex Bit Socket 7 mm

The STMT73374-8B from Stanley is a 7 mm hexagonal bit socket on a 1/2-inch square drive. It lets a ratchet or T-handle turn hex socket (Allen) screws and bolts. Stanley uses an S2 steel bit and an alloy steel socket, which it says gives long-lasting durability, and lists ISO 1173, ISO 2380-1, ISO 2351-1, ISO 1174-1 and ISO 691 as its standards. The range is marked as exceeding the ANSI standard and comes in 11 sizes from 4 mm to 19 mm.