Compression Spring Heavy Duty Color Dark Gray Music Wire Finish Plain Overall Length 2-3/4 in Outside Dia 39/64 in Wire Type Round Wire Dia 0.072 in End Type Squared and Ground Large Outside Dia 0.360 in Small Outside Dia 0.125 in Compressed Length 1.119 in Deflection @ Load 1.15 in Spring Rate 21 lb./in Meets/Exceeds ASTM A228 and AMS 5112 Package Quantity 10