The Aluminum Alloy Filler Neck is a must-have item for pilots and mechanics who need to connect lines or fittings to a fuel or water tank. Made from high-quality aluminum alloy, this filler neck features a smooth, smooth bore that is ideal for welding or soldering. Its unique design includes a built-in O-ring seal and a screw cap, providing a reliable and leak-proof connection. The compact size and lightweight design make it easy to carry and store, making it perfect for any aviation or marine application. Its durability and reliability have earned it a place as a trusted tool in the workshop or on the flight deck.