Extension Spring, Cot, High Carbon Steel, Zinc Plated, End Type Machine Hooks, Overall Length 2 In, Outside Dia 3/4 In, Wire Dia 0.105 In, Load 0.18 Lbs, Deflection @ Load 30.39 In, Spring Rate 91.08 Lbs/In, Meets/Exceeds ASTM A227, Package 6