Extension Spring, Utility, High Carbon Steel, Zinc Plated, End Type Crossover Center Loops, Overall Length 1 3/4 In, Outside Dia 5/16 In, Wire Dia 0.029 In, Load 2.61 Lbs, Deflection @ Load 1.94 In, Spring Rate 1.12 Lbs/In, Meets/Exceeds ASTM A227, Package 12