The AMF Female Ball Coupling is a heavy-duty coupling designed to securely connect a pup trailer to a semi-trailer. The Female Ball Coupling is locally designed and manufactured by AMF and is the market leading tanker pup trailer hitch. The AMF Female Ball Coupling is made of a durable robust construction and is known for its safety and reliability when hauling a pup tanker behind a semi-trailer. Both the front and rear cup of the Female Ball Coupling is made of hardened material to prolong lifespan and down time. The Female Ball coupling is fully serviceable, and spare parts are readily available. The AMF Female Ball Coupling must be used in conjunction with the AMF Male Ball Pin with mounting sleeve.