Moog CC640 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 1985 - 1995 Astro vehicles Spring size: Inside Diameter 4.1", Bar Diameter .812", Installed Height 12" Load rating: 2000 lbs. One square and one tangential end All coil springs meet or exceed OEM (original equipment manufacturers) standards