C. Sherman Johnson Tie-Down Kit Cooler. 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 1000 pounds.Kit Includes: 2 turnbuckles and 2 (48-570) pad eyes Specifications for C. Sherman Johnson Cooler Tie-Down Kit: Manufacturer: C. Sherman Johnson Color: Black Package Contents: C. Sherman Johnson Cooler Tie-Down Kit C. Sherman Johnson 90-500: Tie-Down Kit Cooler