The Barton Marine Mast Base Organizer accepts up to four double tang blocks mounted on individual stainless steel swivel posts with three deck fixing points. The unit is fitted close to the mast base to accept halyards, reefing lines and topping lift and is designed to work in conjunction with our range of deck organizers, rope clutches and winches, doing away with the need to leave the cockpit when reefing, hoisting or lowering the mainsail. Features a long-lasting anodized aluminium base, four stainless steel swivel posts with nylon base washers, and four pairs of nylon packing washers for tang blocks.