... -7/8", 2", 2-5/16", 2.surface: chrome, zinc, powder coating, polished, etc 3.marking: customer decide hitch ball BALL DIA50mm ... /8", 2-1/16", etc.SURFACEzinc finishing, chrome finishing, black powder coated, glass blastedMATERIAL#1020 #5140 #1045 etc.TOWING CAPACITY3000lbs, 5000lbs ... send us your details, including pictures, spec., drawings, etc. ISO standard hitch ball