Extension Spring, Utility, High Carbon Steel, Zinc Plated, End Type Crossover Center Loops, Overall Length 4 In, Outside Dia 7/16 In, Wire Dia 0.054 In, Load 11.92 Lbs, Deflection @ Load 2.50 In, Spring Rate 4.01 Lbs/In, Meets/Exceeds ASTM A227, Package Qty 6