Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 1 1/2 In Outside Dia 0.420 In Wire Type Round Wire Dia 0.038 In End Type Closed and Ground Compressed Length 0.381 In Load 6.37 Lbs Deflection @ Load 0.91 In Spring Rate 7 Lbs/In Meets/Exceeds ASTM A228 Package 5