Specifications and Dimensions: Wire Diameter: 0.25 inch / 6.35 mm; Inner Diameter: 2inch / 50.8mm; Number of Coils: 128; Length: 32 inch / 813 mm. Please confirm that the wire diameter and length are identical to your original garage door torsion springs for time-saving replacement Sturdy and Durable: Our garage door springs are made of professionally heat-treated spring steel coils and aluminum cones. With advanced electrocoating surface treatment, they boast excellent corrosion resistance and wear resistance, eliminating the need for additional lubrication and providing a longer lifespan Extended Lifespan: This garage door torsion spring can effortlessly endure over 16,000 cycles and maintains its elasticity for 3 years without significant deterioration, ensuring a strong, durable, and stable performance Easy Installation: Our garage spring comes with imprinted sizes and left/right labels, accompanied by anti-slip installation bars and gloves