5/16" x 9", Stainless Steel, Hook & Eye Turnbuckle, For Tightening Or Drawing Together Various Lines & Cables, Marine & Other Outdoor Applications, Resistant To Atmospheric Corrosion, Are Non-Magnetic, & Passivated For Corrosion Resistance, Hex Shaped Body Allows For Ease Of Adjustment By Hand Or With A Wrench, Safe Working Load Is 175 LB.