A 3/8" drive universal joint, which couples a ratchet or extension to a socket through a pivot so the socket can be turned at an angle. A universal joint reaches fasteners that a straight ratchet cannot line up on, which is what makes it useful in an engine bay or any other confined space.

• Drive size: 3/8" square
• Couples a ratchet or extension to a socket at an angle
• For fasteners a straight ratchet cannot reach