Extension Spring, Utility, High Carbon Steel, Zinc Plated, End Type Crossover Center Loops, Overall Length 2 1/2 In, Outside Dia 3/8 In, Wire Dia 0.035 In, Load 3.81 Lbs, Deflection @ Load 3.02 In, Spring Rate 1.05 Lbs/In, Meets/Exceeds ASTM A227, Package 3