This is a set of replacement XX Long Black Plastic Ultra Shocks. There are two shocks per package. They come with damper oil, springs, and preload spacers. These shocks are the stock replacement for the rear shocks on the Rustler, Stampede. NitroStampede, NitroRustler, and NitroSport. They also fit front or rear on the T-Maxx or E-Maxx.