Made from AISI 316 stainless steel and features an electro-polished bright finish. All thread sizes and wire rope sizes conform to U.S. standards and are interchangeable with most other U.S. manufacturers. Turnbuckles should be lubricated before their first use and regularly thereafter. They should also be regularly be rinsed with fresh water and inspected regularly for signs of damage such as bent terminals or cracking at thread roots, particularly at the end of thread. End fittings should be checked to ensure uninhibited universal movement. A 5/8"-18 B 17-1/8" C 12-3/16" D 7-1/2" E 7/8" F 9/16"