Genuine UK-made Hi-Los are adjustable length struts that allow the Classic Mini to be lowered or raised in each corner to achieve different ride height and corner weights. Plus the wider flange of the Hi-Lo strut effectively raises the spring rate, to stiffen the suspension. Now adjustable with regular tools. Struts are supplied in a pair, two (2) pairs required to do the car. For the rear, you will also need one (1) SSS0014K, which is a pair of aluminum extension tubes.