Compression Spring Precision High Carbon Steel Music Wire Finish Plain Overall Length 7/8 In Outside Dia 0.180 In Wire Type Round Wire Dia 0.026 In End Type Closed and Ground Compressed Length 0.391 In Load 4.95 Lbs Deflection @ Load 0.33 In Spring Rate 15 Lbs/In Meets/Exceeds ASTM A228 Package 5