[Use] First fully loosen each turnbuckle by rotating its body outward until it is completely open. Note that the threaded ends remain partially concealed inside the turnbuckle body. Second Connect one end of the turnbuckle to a shoulder eye bolt and the other end to a thimble eye on a cable. Finally Once both ends are secured, rotate the turnbuckle body to adjust tension. ​​Important:​​ Only the turnbuckle body should rotate during tightening. If connected to a cable, hold or secure the threaded end (e.g., with a tool) to prevent it from twisting.