Widely used iron or aluminum metal accessories for sending wires, collectively referred to as hardware. There are many types of hardware with various uses, such as various clamps for installing conductors, various hanging rings for insulator strings, various compression sleeves and repair sleeves for connecting conductors, various types of spacer rods on split conductors, and more. Additionally, there are various tension hardware for poles and towers, and the size of the protective conductors must be compatible with each other.