Straight line length 2.5 meters --- spring length about 0.25 meters----can undraw about 1.25 meters Straight line length 5.0 meters --- spring length about 0.5 meters can undraw about 2.5 meters Straight line length 7.5 meters --- spring length about 0.75 meters can undraw about 3.75 meters High Wear Resistance, Good Weatherability, Resistance, Heat Resistance And Flame Retardance. High Pressure Resistance, Aging Resistance And Long Service Life. It Is Soft And Easy To Install. The standard is the length of the line, it is recommended to pull it to less than half.

It is recommended to pull less than half,if pull it over we do not assure rebound.

Straight line length 2.5 meters --- spring length about 0.25 meters----can undraw about 1.25 meters
Straight line length 5.0 meters --- spring length about 0.5 meters can undraw about 2.5 meters
Straight line length 7.5 meters --- spring length about 0.75 meters can undraw about 3.75 meters