This National Hardware hook/hook turnbuckle tightens and draws together lines and cables in various applications. The lightweight extruded aluminum body has a steel wire hook on both ends. The hex design allows for easy adjustment by hand or with a wrench. Turnbuckle size = Safe Working Load (SWL)3/16 " = 45 lb SWL7/32" = 55 lb SWL1/4" = 90 lb SWL5/16"" = 130 lb SWL3/8" = 215 lb SWL | HILLMAN 2174BC Hook/Hook Turnbuckle | Size 3/8" x 10-1/2"