Moog 6330 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 1968 - 1972 Spring size: Inside Diameter 3.68", Bar Diameter .625", Installed Height 11.25" Load rating: 1827 lbs. One square and one tangential end All coil springs meet or exceed OEM (original equipment manufacturers) standards