Package contains 4 x 180ml bottles of UFO Chain Drip.UFO Drip Chain Coating is a bottled product for chains that is applied in liquid form, but which hardens to a 100% dry chain coating. It generates less friction than any other chain lube on the market (being out-performed only by the factory-treated UFO Racing Chain).The genius of UFO Drip Chain Coating is that it combines the convenience of a drip application with the friction-beating performance of a completely dry chain coating. So, not only does UFO Drip test faster than every other chain lubricant, it's properties actually rank it in a brand-new category: the liquid-applied but ultimately 100% dry chain coating. Another benefit of UFO Drip Chain Coating is the fact that the coating closes around the chain in a way that prevents all kinds of contamination your chain is exposed to when riding, from sticking to the chain. Therefore, make sure to clean your chain properly before applying UFO Drip, and it will then remain clean as long as you continuously apply UFO Drip every 200 km as recommended.