Compression Spring Heavy Duty Color Dark Gray Music Wire Finish Plain Overall Length 3-1/2 In. Outside Dia 23/32 In. Wire Type Round Wire Dia 0.096 In. End Type Squared and Ground Large Outside Dia 0.360 In. Small Outside Dia 0.125 In. Compressed Length 1.486 In. Deflection Load 1.13 In. Spring Rate 40 lb./in. Meets/Exceeds ASTM A228 and AMS 5112 Package Quantity 10WARNING:: California ResidentsThis product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.