Product Description Harken System C CB Reef CarA Harken Battcar system along with full-length battens helps raise, douse, and reef with ease and acts as extra crew if you're sailing shorthanded. Battcar systems outperform in-mast or in-boom furling, cost less, and you don't need to re-cut 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.Specifications: Length (mm) 231 mm Length (in) 9 1/8 in Width (mm) 85 mm Width (in) 3 3/8 in Weight (g) 1071 g Weight (oz) 38 oz Maximum working load (kg) 1429 kg Maximum working load (lb) 3150 lb A (mm) 231 mm A (in) 9 1/8 in B (mm) 51 mm B (in) 2 in D (mm) 33 mm D (in) 1 5/16 in E (mm) 12 mm E (in) 1/2 in