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Professional mounting system
N-Star marine grade aluminium base consists of a 1" diameter ball and 2.25" x 0.875 base with 11mm hole.
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 Aluminium
1" Rubber Ball "B" Size