Stainless steel or carbon steel made D Shackle With Safety Pin is used as essential part of car towing ropes and lifting slings. Ergonomic design of this metal shackle ensures secure fastening of ropes to suit specific application needs. Shape of D Shackle resembles to the letter D. Its shape also has similarity with the loop of metal chain. This shackle is, therefore, referred as chain shackle. Compact shape, standard weight, perfect dimension and standard thickness are the key characteristics of this metal shackle.