AIRHEAD's TOW DEMONs are new higher strength versions of a classic and very popular water sports tow harness. The high-impact molded plastic float / pulley system 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. Available in vinyl-jacketed steel cable and floating rope versions. Recommended for recreational water skiing, wakeboarding, kneeboarding and towing 1 rider tubes. Snap hook opening width 7/16".