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 1 x bottle 250ml Ultimate 300 Yellow 1 x filter pipe 1 x valve tool