Tuff Jug Flexible Fuel Spout With Auto Stop The Tuff Jug Flexible Fuel Spout with Auto-Stop is a revolutionary product designed to streamline your fueling process. Featuring an innovative internal vented system, it offers a fast flow rate and automatic shutoff without the hassle of external vents. This eliminates the risk of fluid spillage during transportation or refueling. Designed for convenience and efficiency, this fuel spout is an ideal solution for quick and mess-free fuel fill-ups. Features: Internally vented fuel spout provides both fast flow and auto shut-off Only compatible with specified jug size Revised, 1 diameter fuel tube for faster flow Clear spout tube for improved viewing Removes the need for external jug vents that can break or allow fluids to spill Proprietary shape and length sized for 5 US gallon (20 liter / 5.3 gallon) or 2.5 US gallon (10 liter / 2.7 gallon) Tuff Jug fuel containers Jug not included Fully rebuildable Requires 1 NPT adapter or Tuff Jug Standard Cap with 1 receiver (sold separately) Note: Spouts are only compatible with the internally-vented 3rd Generation (no external vent tab near handle) of Tuff Jug fuel containers. The Flexible Fuel Spout with Auto-Stop is only compatible with Tuff Jug products. Spouts are sized according to jug capacity and are not cross compatible.