The EPA COMPLIANT fuel tanks perfect for use with small outboards. Meets or exceeds the requirements of the following standards; UL1185, CSAB306, AS2906, ABYC H25, ISO. * Manufactured from durable, high impact polyethylene-won't rust or corrode. Auto venting cap. Ergonomic cap seals and clicks into place. Ergonomic handle design makes it easy to carry when full. * Optional gauge. 1/4" NPT thread to fit all standard tank fittings and outboard engine fuel line systems. 3/8" I.D. pick-up tube provides greater fuel flow to high performance engines.