What do you want from your fender holders? Most boaters would agree that versatility, durability and style are the key. Polyform%u2019s True Fit Fender Holder system is the answer. Ours is a modular system that will fit rail systems from 7/8%u201D to 1-1/4%u201D at any height or any angle. Because it%u2019s modular you can mix or match sizes or add on as your needs change. Choose Polyform fender holders, and you%u2019ve selected one of the most popular fender holders on the market.