Most but not all battery-cable clamps have 10-millimeter bolts, so you'll likely need a 10-millimeter open-end wrench to disconnect the cables. A socket-wrench set that includes that same-size ...

Related Story. SK Tool X-Frame Ratcheting Wrench Review; Boxed End. On the other end, it’s more cut-and-dried. The boxed end will either come in six-point or 12-point and sometimes features some ...

A reader says this is the smallest open-end wrench in the world, with 0.005 in. across the flats on one end and 0.010 in. across the other. The human hair next to the wrench gives a comparative size.

Crow's-foot 3/8-inch drive open end sockets. These are sort of like an open-end wrench but have never proved to be all that handy. Good for situations where one can only go straight on a bolt or nut.

The end of each handle has a square drive (¼, 3/8, or ½ in.) that goes into a square recess on the box-end wrench fittings. The box-end wrench fittings are sized to fit SAE, metric, E-Torx, and ...