Moog CC627 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 Use on select 1978 - 1987 GM vehicles Spring size: Inside Diameter 5.56", Bar Diameter .59", Installed Height 10.25" Load rating: 560 lbs. One tangential and one pigtail end All coil springs meet or exceed OEM (original equipment manufacturers) standards