Sea-Dog Closed Base Aluminum CleatThis Sea Dog closed base cleat features die-cast aluminum construction with a large base that distributes heavy loads evenly. Features: Designed for use on docks or aluminum vessels; Countersunk for FH fasteners (not included); Dimensions:046104 A: 4"; B: 1"; C: 13/16"; D: 1-5/8"; 046105 A: 5"; B: 1-1/16"; C: 1-1/16"; D: 1-15/16"; 046106 A: 6"; B: 1-3/8"; C: 1-3/8"; D: 2-3/16";