Extension Spring, Utility, High Carbon Steel, Zinc Plated, End Type Crossover Center Loops, Overall Length 3 In, Outside Dia 7/16 In, Wire Dia 0.048 In, Load 8.01 Lbs, Deflection @ Load 2.27 In, Spring Rate 2.8 Lbs/In, Meets/Exceeds ASTM A227, Package 12