Shackle شگل is a mechanical and useful type of chain accessory that is also used in wire rope lifting slings. shackles are available in both carbon steel and stainless steel grades. shackles have different standards and are produces with various brands. some of the international manufacturers of shackles include CROSBY, YALE, GREEN PIN. shackles are produced in very limited lifting capacity up to very high lifting capacity of over 200 tons that are used most often in marine applications. G80 is a very common grade of shackles. Takin boxel Co. is an Iranian distributor of different grades of shackles.