The present invention relates to a wire rod for a locking device of a new configuration that is not easily cut, so that there is little risk of theft of a product, and can be stored so that it does not occupy a lot of volume by folding or bending. Its composition is a heart material made of a bundle of threads; A tube surrounding the core material; A sheath in the form of a fabric as surrounding the tube; And end fixing means for fixing both ends of the core material, the tube, and the shell to each other. The core material is characterized in that it is composed of a unit core material having two or more lengths.
展开▼
