Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 7/8 In Outside Dia 0.480 In Wire Type Round Wire Dia 0.038 In End Type Closed and Ground Compressed Length 0.210 In Load 5.57 Lbs Deflection @ Load 0.53 In Spring Rate 10.5 Lbs/In Meets/Exceeds ASTM A228 Package 5