Ultimate 300 cools the tyre and maintains constant tyre pressure as it seals any O-ring, porosity, breather hole and bead leaks Unlike water-based tyre sealants, Ultimate 300 is an advanced chemical formula combining glycol, latex, adhesion agents, rust inhibitors, fibers and other components Not recommended for fast movers Whats in the box 4 x bottle 500ml Ultimate 300 White 4 x filter pipe 4 x valve tool