Die Spring, Extra Heavy Duty, Color Red, Oil Tempered Chrome Silicone, Finish Plain, Overall Length 9/16 In., Outside Dia. 5/16 In., Wire Dia. N/A, End Type Closed and Ground, Large Outside Dia. 0.360 In., Small Outside Dia. 0.125 In., Compressed Length N/A, Deflection @ Load 0.27, Spring Rate 1 lb./in., Meets/Exceeds ASTM A313, AMS 5688, Package Quantity 10