Schaefer's 99-63 is great for most boats between 30'-36' (9-11m). Features vinyl covered wire, leather covered blocks and Schaefer's unique design for efficiency. Boat Size 30'-36' (9 m-11 m), Mainsail Luft 33'-38' (10m-11.6 m), Boom Foot 10'-12' (3 m-3.7 m), Included Wire (vinyl coated) 14' (4.3 m), Included Line (yacht braid) 75' x 1/4" (22.9 m x 6 mm), Weight 4 lbs. 12 oz. (2.15 kg)