Moog CC507 Coil Spring Set Variable rate coil springs maintain proper chassis ride height and smooth ride Ideal for family transportation, work trucks and sales fleet vehicles Powder-coated to protect against corrosion Worn or sagging coil springs can cause premature tire wear due to vehicle misalignment Fits 1969 - 1981 GM vehicles Spring size: Inside Diameter 5.53", Bar Diameter .612", Installed Height 10" Load rating: 849 lbs. Pigtail ends All coil springs meet or exceed OEM (original equipment manufacturers) standards