Customization: | Available |
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Function: | Pressed |
Material: | Steel |
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Item | Garage Door Torsion Spring |
Material | High carbon steel: 77B/82B/Zinc spring steel/SS spring steel |
Wire diameter | 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5mm |
Inside diameter | 50.8mm-152mm |
Free length | 325-3500mm |
Finish | Oiled tempered/Black coated/Corrosion resistant/Zinc |
Winding hand | Left and Right |