Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 1 1/4 In Outside Dia 0.720 In Wire Type Round Wire Dia 0.063 In End Type Closed and Ground Compressed Length 0.441 In Load 15.58 Lbs Deflection @ Load 0.82 In Spring Rate 19 Lbs/In Meets/Exceeds ASTM A228 Package 5