AIRHEAD`s TOW DEMONs are new higher strength versions of a classic and very popular water sports tow harness. The vinyl coated steel cable version features a high-impact molded plastic float \/ pulley system that allows for easy attachment of ski ropes, wakeboard ropes and tube ropes. Connect TOW DEMON quickly and easily to boats with the 2 large corrosion-resistant snap hooks. Recommended for recreational water skiing, wakeboarding, knee boarding and towing 1 rider tubes. Snap hook opening width 7\/16 inches.