Compression Spring, Precision, High Carbon Steel Music Wire, Finish Plain, Overall Length 3/4 In, Outside Dia 0.180 In, Wire Type Round, Wire Dia 0.016 In, End Type Closed and Ground, Compressed Length 0.177 In, Load 1.28 Lbs, Deflection @ Load 0.51 In, Spring Rate 2.5 Lbs/In, Meets/Exceeds ASTM A228, Package 5