YHDOOR Garage Door Torsion Spring (2″ Pair with L/R Wound) with Non-Slip Winding Bars (Yellow.207″ x 2″ x 23″)

The package included:

1, 1xleft-hand wind spring

2, 1Xright-hand wind spring

3, 2 pcs winding bars

4, Spring size: 0.207″x2″x23″ WARNING: HIGH SPRING TENSION CAN CAUSE SERIOUS INJURY OR DEATH.Professional installation is recommended. Do NOT attempt to install springs or hardware by yourself unless you have the proper tools, reasonable mechanical aptitude and experience, and upper arm strength. Extension and torsion springs, along with attached hardware, are under extreme tension at all times. All tension must be released from springs before any work is performed. Notice: Please confirm your old spring specification before purchase.choose smaller spring is absolutely prohibited.