A socket drive adapter with a 3/8" female square and a 1/4" male square. The female square fits onto the drive lug of a 3/8" ratchet or extension and the male square accepts 1/4" drive sockets, so one ratchet can turn sockets from the other drive size.

• Female square: 3/8"
• Male square: 1/4"
• Lets a 3/8" drive ratchet turn 1/4" drive sockets