These rebuilt metric brake calipers are an inexpensive way to replace those old and heavily used problem prone used units. As we all know, brake fluid attracts moisture. If the previous owner of your S-10 chassis never flushed the brake system and replaced it with new fluid, it's possible your original calipers have rusty bores which can cause the calipers to drag. Mitigate the risk of problems down the road by replacing those heavily used calpers with these new rebuilt units today! Sold as a pair.