ITEM NAME:50mm Tow Ball Connector Hitch Pin Coupling Attachment Rear Trailer Parts Durable Features: Manufactured from rust resistant steel. Establishes a secure connection between your major vehicle and the additional trailer. Perfect for towing trailers, caravans and many more. Maximum recomended trailer weight 3.5 tons. Specifications: Material: steel Color: silver Ball size: about50mm Package included: 1pc x tow ball Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..1pc x tow ball. Ball size: about50mm. Anyway we will try our best to avoid this kind of thing.