Moog 5413 Coil Spring Set Powder-coated to protect against corrosion Designed to lower stresses for longer service life All coil springs are 100% load tested Worn or sagging coil springs can cause premature tire wear due to vehicle misalignment Use on General Motors products from 1967 - 1972 Spring size: Inside Diameter 5.530", Bar Diameter 0.593", Installed Height 8.50" Load rating: 740 lbs. Pigtail ends All coil springs meet or exceed OEM (original equipment manufacturers) standards