The Great Bungee - Adjustable Boat Fender Clips - Quick Attach Hooks for Boat Bumpers - Bumper Hangers for BoatPontoon - Boating Accessories for Fenders -. Fender secures to dock using8 x Ø 7 mm screws. We have thousands of items in stock and ready to ship so take a look at our range of dock fenders step fenders and fender socks.