The government locks in Seattle reqiure 50 ft Lock Lines with at least 12" eyes when passing through the "Ballard Locks" between the Ship Canal and the Puget Sound. 100% premium double braided nylon Professionally spliced soft eye at one end Yacht whipped at the bitter end and splice point 1/2" lines have a 12" eye length 5/8" lines have a 15" eye length 3/4" lines have an 15" eye length