Shackles are most often used in lifting systems as a final, interchangeable connector, used to connect wire rope, chain and round slings, various types of fittings and accessories. Thanks to them it is possible to easily replace damaged steel ropes or chains. They guarantee durability and reliability of connections, which is why they are used especially where mainly a secure and reliable connection of various types of components is required, e.g. in transport, construction, shipping, engineering. They are usually cast or forged in carbon steel or stainless steel. Shackles are divided into round and oblong.