1-7/8" x 3/4" Chromed Plated Towing Parts Trailer Hitch Balls

2'' ball head: bearing 5000 pounds, threaded rod diameter 25.4MM, threaded rod length 50.8MM

50MM ball head: bearing 3500 pounds, thread diameter 22.23MM, thread rod length 60MM

1-7/8'' ball head: bearing 3,500 pounds, threaded rod diameter 25.4MM, threaded rod length 50.8MM

2-5/16 inch ball head: bearing 10,000 pounds, threaded rod diameter 25.4MM, threaded rod length 63MM