Hitch Ball Mount Adapter. 5/8" rise, 1 1/4" drop, use with 3/4" shank diameter hitch ball, for 1 1/4" opening, 3,500-lb rating. Designed and tested to match your vehicle`s towing capacity, Mopar`s Ball Mount Kits are made of heavy-duty cold-rolled steel. Powder-coat paint provides a durable finish.. . Required: 0