Make sure you have a hitch ball tough enough to handle the load you€™re towing. All have a 1-1/4" diameter threaded shank and are specially designed to fit the Equal-i-zer® hitch perfectly. Chrome plated to look great and forged from super strong chromoly steel to last as long as your Equal-i-zer® hitch does. Fits other manufacturers hitches too. Listed as ball size x shank diameter and length. Priced each.