Cooler Tie-Down KitC. Sherman Johnson has designed this ergonomic hook to hook turnbuckle to be used to tie down coolers, chairs, dinghies, casting platforms or any other items that need to be secured. The body of the turnbuckle has a cushioned grip which allows adjustment without tools. Knurled nuts lock the turnbuckles in place. The hooks have a 1" opening.These tie down turnbuckles are constructed of 316 Stainless Steel and the hooks are threaded into bronze inserts to prevent galling. Approximate dimensions are 11-3/4" closed and 15" open. Maximum working load is 1,000 pounds. Kit Includes: 2 turnbuckles and 2 (48-570) pad eyes