Model Number: 3 core spring telescopic wire spiral cable
The standard is the length of the line, it is recommended to pull it to less than half, longer and better!
It is recommended to pull less than half ,if pull it over we do not waranty to rebound.
Description
2.5 meters straight line---the length of the spring is about 25CM ---- it can stretch about 1.25 meters
5.0 meters straight line--- the length of the spring is about 50CM ---- it can stretch about 2.5 meters
7.5 meters Straight line---the length of the spring is about 75CM ---- can stretch about 3.75 meters