Everything you need to adapt a Chinook Carbon Boom into a low friction, 8 to 1, on-the-fly outhaul system. Includes 2 cleats, double sail pulley, 11/64 pre-stretched line (1-12,2-5 lengths), two Ronstan pulley blocks, and 2 T-handles. Compatible with modern race booms that have three integrated outhaul pulleys.