Lead Car Only for 1" T-Track 17-2817 28 Lead car allows adjustment of the car. SaiTrack Size 1" x 1 1 8" (25 mm x 3. 2 mm), Boat Size Up To LOA, Displ., Sail Area: 33', 12000 lbs., 520 sq. ft. (10 m, 5455 kg, 48 m2), Sheave Dia. 1 1 2" (38 mm), Max Line 1 2" (13 mm), L 3" (76 mm), W 1 1 4" (32 mm), H 3 9 32" (83 mm), Bearing Height 1 29 32" (48 mm), SWL 2500 lbs. (1135 kg), Weight 10 oz. (. 28 kg)