Compression Spring Heavy Duty Color Dark Gray Music Wire Finish Plain Overall Length 2 in Outside Dia 5/16 in Wire Type Round Wire Dia 0.038 in End Type Squared and Ground Large Outside Dia 0.360 in Small Outside Dia 0.125 in Compressed Length 0.765 in Deflection @ Load 0.93 in Spring Rate 10 lb./in Meets/Exceeds ASTM-A228 AMS 5112 Package Quantity 10