This part should be used in conjunction with RAP-274-1MU.
RAM EZ-ON/OFF Quick Release Diamond Adapter (Female) – RAP-274-1BU
$9.95 incl. GST
The RAP-274-1BU converts all 1″ diamond base ball mounts into a quick release mount. Attach the RAP-274-1BU to the diamond pattern found on all 1″ diamond base ball mounts, then transfer your cradle from the EZ-ON/OFF™ Bicycle Mount to your second mount.