Expect ultimate towing power and reliability with Reese InterLock Carbon-Forged Ball Mounts. Featuring acclaimed InterLock 1-wrench tightening, 1 hitch ball hole size, and up to 7,500-lb. capacity in select models, Reese Carbon-Forged Ball Mounts outperform imitators attempts at sturdy ball mounts. Your towing capability just became more powerful. Fits 2 receiving openings. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Ball Mounts.