This 54mm (2-1/8") socket is designed to remove the flywheel nut from rotary engines, it takes a 3/4" driver.

This is truly a superb work of American art and craftsmanship. After we were finished making these we didn't know whether to put them in our tool box or to place it on our mantle.

You need a 3/4" driver or adapter in order to use this socket. We do offer the adapter as well.

Lifetime warranty If you break it, send it back and we will replace it.