I just bought a Donzi ZXO last week. It has two fender holders on each side of the boat. I need to buy two pins, can any one tell me where to find them and how they are sized?

My credibility is poor, but I think you order 1/4" , 5/16'' or 3/8" (pi n diameter). Mine were 3/8" and hard to find. Finally, got them from Donzi.

Dana Marine has 3/8 pins listed