HPI's new design holds half of a quart of nitro so you can spend more time driving and less time refilling your fuel bottle. It's made from translucent polyethylene for durabilty, and features a tribal skull HPI logo on one side and 50cc markings on the other side to help measure the fuel. A rubber cap prevents spills and seals the bottle from dirt and dust, and a rubber tether insures that the cap never gets lost. The heavy duty aluminum spout is gunmetal anodized and has a machined tip to help the rubber cap stay in place.