How to Choose a Socket Set Around Drive Size and Reach

List two or three fasteners you expect to work with. Identify the actual size and whether it is metric or inch. The socket’s fastener size is separate from the square drive that attaches it to the ratchet. A quarter-inch drive can take metric or inch sockets designed for that drive.

Pick the drive around access and load

A compact ratchet can be easier to position in a narrow recess. A larger drive and handle can suit bigger fasteners, provided they have room to swing. Check the tool maker’s ratings and use the correct tool and procedure for any specified torque. Avoid choosing by the piece count alone.

Choose the depth for the fastener

A deep socket can reach a nut with a stud projecting through it. A shallow socket can fit where the space above a fastener is limited. Measure both the recess and the space for the handle. An extension can improve access while still requiring room for the socket at the end.

Build a set you can check at a glance

Choose a case or rail that makes missing sizes visible. Verify that the common sizes you need are included and buy unusual sizes individually. Try the ratchet’s direction switch and socket release before buying if you often work in cramped spaces.