A Harken¨ Battcar system along with full-length battens helps raise, douse, and reef with ease and acts as extra crew if youÕre sailing shorthanded. Battcar systems outperform in-mast or in-boom furling, cost less, and you donÕt need to recut your sail. The one-piece solid aluminum construction is lightweight and strong. The free-rolling ball bearing cars let you hoist and reef the main quickly on all points of sail. Web-on plates are required for the 3867 System B CB headboard car. Sold separately.