Easily convert your 2" ball to a 2-5/16" with the Blue Ox Quick Change Tow Ball Adapter. This clamshell adapter is designed for use with Blue Ox Adjustable Ball Mounts. It is made from stainless steel and has magnetized closure. The maximum gross trailer weight equals your 2" fixed tow ball rating. You no longer have to switch out balls or get a hitch with a dual or triple ball. Get yours today!