Hex sockets are tools used for tightening and loosening bolts and nuts with hexagonal heads. They are typically used with a ratchet or breaker bar and are designed to fit onto a square drive, usually 1/2 inch in size.
A 1/2" square drive is a square-shaped opening on a tool or socket, which is designed to fit onto a 1/2 inch drive tool such as a ratchet or breaker bar. The square drive allows for torque to be applied to the tool or socket, allowing it to tighten or loosen nuts and bolts.
Hex sockets for 1/2" square drive are available in a range of sizes, typically ranging from 5mm to 36mm. Some sets may include smaller or larger sizes depending on the intended use.