1.ball dia: 50mm,1-7/8", 2", 2-5/16 ... powder coating, polished, etc 3.marking: customer decide hitch ball BALL DIA50mm, 1-7/8", 2", 2-5/16"SHANK DIA3 ... finishing, black powder coated, glass blastedMATERIAL#1020 #5140 #1045 etc.TOWING CAPACITY3000lbs, 5000lbs, 6000lbs, 8000lbs, 10000lbs, 12000lbs, 15000lbsPACKAGEstandard export cartons ... , including pictures, spec., drawings, etc. ISO standard hitch ball