- There is no need for a separate power source since it uses the elasticity of built-in spring.

- It has a simple structure, does not break down easily, and is easy to install since it uses the spring.

- Since it is small, it can be installed in a narrow space and is inexpensive.

- Since there are various types, there is a wide range of choices depending on the site conditions.

- This small and medium-sized cable for general purposes is suitable for a device that winds a control cable for power supply of various industrial devices.

- It has a PVC pipe inside the drum to protect the external electric current collector. It is easy to handle and easy to repair and inspect, but it requires caution when using it in a poor outdoor work environment.