Boat Size Up to 25' (7.6 m), Pin Dia. 1/2" (13 mm), Pin Length 3-7/8" (98 mm), Strap Thick. 1/8" (3 mm), Strap Lenght 4-1/4" (108 mm), Strap Width 1" (25 mm), Fastners (8), 1/4" RH (6 mm), Weight 8 oz. (227 g). Includes (2) 81-46, (1) 81-49