Optimize your sailing experience with the Harken 40MM 5 Sheave Deck Organizers. These boat deck organizers efficiently direct halyards and control lines to the aft, letting you manage your sail safely from the cockpit. Made with an injection-molded composite top plate, they offer excellent impact and UV resistance. The design features asymmetrical, glass-filled nylon sheaves with flared bases that efficiently lift lines off the deck, all while working in tandem with a reliable bearing system to minimize friction. For greater customization, these deck organizers offer stackable configurations.