Compression Spring, Precision, High Carbon Steel Music Wire, Finish Plain, Overall Length 1/2 In, Outside Dia 0.360 In, Wire Type Round, Wire Dia 0.032 In, End Type Closed and Ground, Compressed Length 0.145 In, Load 4.5 Lbs, Deflection @ Load 0.25 In, Spring Rate 18 Lbs/In, Meets/Exceeds ASTM A228, Package 5