Davis Instruments Shockles FenderFriend - Center Tube - Black. Nylon buckle for swift secure attachment without complicated knots.FenderFriend stretches to avoid shock to your rails stanchions life lines or cleats. Specifications for Davis Instruments Shockles FenderFriend: Manufacturer: Davis Instruments Color: Black Package Contents: Davis Instruments Shockles FenderFriend Davis Instruments 2455: Shockles FenderFriend - Center Tube - Black