The RAM-B-252U marine grade aluminum base consists of a 1″ diameter ball and 2.25″ x 0.875″ base with 11mm. hole. This part is often used on motorcycles, attaching to the mirror frame. This part fits well on many handlebar pinch bolts with a washer (base is 5mm. thick).
Material: Powder Coated Marine Grade Aluminum
Ball Size: 1″ Rubber Ball “B” Size