Compression Spring Heavy Duty Color Dark Gray Music Wire Finish Plain Overall Length 1/4 In. Outside Dia 5/32 In. Wire Type Round Wire Dia 0.021 In. End Type Squared and Ground Large Outside Dia 0.360 In. Small Outside Dia 0.125 In. Compressed Length 0.143 In. Deflection Load 0.08 In. Spring Rate 36 lb./in. Meets/Exceeds ASTM-A228 AMS 5112 Package Quantity 10California proposition 65 warning