Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 1/2 In Outside Dia 0.120 In Wire Type Round Wire Dia 0.016 In End Type Closed and Ground Compressed Length 0.205 In Load 1.87 Lbs Deflection @ Load 0.22 In Spring Rate 8.5 Lbs/In Meets/Exceeds ASTM A228 Package 5