Can be mounted to a variety of irregular surfaces and angles on swim platforms, cockpits and companionways. Constructed from soft polypropylene webbing over a semi-rigid core. Safe in areas where occupants might impact them. They meet the ABYC H-41 standard for strength: a 400 lb. load in any direction. All materials are non-corrosive, UV stable and mildew-resistant. Grip Over-molded Fastener #12 (4)