Best chrome spring on the market-- 360 degree polished wire, largest selection of rates and heights , and the market's best guarantee gives you the AFCO Advantage! Completely polished inside and out and boxed in a blue cloth protective sleeve will make these springs the best-looking chrome on your car. All AFCO coil-over springs are guaranteed to not lose more than 1% of their original free height for life. Quit having to re-set your ride height due to sagging springs