This product USES three main spring, a pay a gradient of spring stiffness spring, a total of four pieces of order. 1-2 slices of specifications are not 70 * 7, 3 specifications are not 70 * 8, after a pay spring specifications 70 * 14, the main spring material are 60 si2mn, crva for spring material for 50. Plate spring loading a length of 1205, the front length is 520, front end lug installed aperture Φ 17, back-end lug installed aperture Φ 28