Curt Manufacturing C-10: Gooseneck Hitch Fixed Ball Carbide Powdercoated 2-5/16 in. Ball 30000 GTW Universal Each – CURT fixed ball gooseneck hitches have a 30000 lb. GTW flat plate and all of the same heavy-duty features as other popular CURT hitches except for folding capabilities. These hitches install easily by using CURT’s under-bed folding ball hitch assembly kits sold separately for a more secure fit. Safety chain hookups are also sold separately.