Moog 6197 Coil Spring Set Powder-coated to protect against corrosion Designed to lower stresses for longer service life All coil springs are 1% load tested Worn or sagging coil springs can cause premature tire wear due to vehicle misalignment Use on Chevy products from 1965 - 1966 Spring size: Inside Diameter 5.54", Bar Diameter .531", Installed Height 9.78" Load rating: 628 lbs. One tangential and one pigtail end All coil springs meet or exceed OEM (original equipment manufacturers) standards