The 12K Aluminum Six Post Top Beam Kit is used on the 20,000 lb. & 24,000 lb. six post pile mount lift. (2) top beams make it able to handle 20K-24K pounds. Made from marine-grade 6061-T6 US aluminum. Features a no-weld design. Includes all stainless steel mounting fasteners. The bronze bearings have 1/4 in. easy-to-reach grease fittings. The top beam is drilled out for a flat-plate hoist to be installed onto a flat-plate hoist. Made of sch. 40 galvanized steel. Measures 14 ft. 6 in. with a 1.5 in. ID. Includes one-direction side-mounted (boat lift style) cable winders.