This Trimax 2-1/2"??"2" Class V Receiver Hitch Adapter Sleeve converts 2" RAZOR adjustable ball mounts (or any 2" ball mount) to a 2-1/2" receiver. This high-quality aluminum sleeve can be used with steel or aluminum ball mounts.
Aluminum Sleeve adapter from 2.5" to 2" receiver
Aluminum Sleeve adapter from 2.5" to 2" receiver