Garage Door 1 3/4" ID Torsion Springs with Installed Cones

1 3/4" ID Torsion Replacement Springs with Installed Cones Oil tempered black coated torsion springs include winding and anchor cones pre-installed. Springs are factory coated black for smoother, cleaner operation. For use on doors with 4" standard lift drums. Engineered for maximum application range. Springs are made of steel coils with aluminum cones. Life cycle - Minimum 10,000 cycles, at +/- 7.5 lbs of target door weight.  Includes: 1 3/4" ID Torsion spring with winding and anchor cone installed Features: Engineered for maximum application range. Minimum 10,000 cycles, at +/- 7.5lbs of target door weight. Springs are made of steel coils with aluminum cones. Compatibility Compatible with: For use on doors with 4" standard lift drums. - You will need to already know the length and wire size to match with our selection. Instructions Instructions:Click here to download manual