Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 1 1/2 In Outside Dia 0.480 In Wire Type Round Wire Dia 0.042 In End Type Closed and Ground Compressed Length 0.379 In Load 7.4 Lbs Deflection @ Load 0.87 In Spring Rate 8.5 Lbs/In Meets/Exceeds ASTM A228 Package 5