VEVOR Garage Door Torsion Springs Pair of 0.25 x 2 x 31 inch with Winding Bars

VEVOR Garage Door Torsion Springs Pair of 0.25 x 2 x 31 inch with Winding BarsPrecision Engineering for PerformanceUpgraded and Improved TechnologyDurable Beyond CompareQuick & Hassle-FreeSafety FirstSpring with ElectrocoatingService Life: Approximately 16,000 Cycles (opening + closing),Net Weight(Include accessories): 27.3lb / 12.4kg,Spring Size (Wire Dia. x Inner Dia. x Length): 0.25 x 2 x 31 inch / Φ6.35 x Φ50.8 x 787 mm,Item Model Number: 250-2-31,Rotation: 1 x Dextrorotary + 1 x Levorotary,Main Material: High Carbon Steel 82B + Cast Aluminum ADC12