Motion Pro 12-0039 1/4" NPT x 1/4" Barb Inline Fuel Valve 1/4-inch NPT x 1/4-inch barb inline ON/OFF Fuel Valve Features 1/4 inch pipe thread on one end and a 1/4 inch barb on the other Viton O-ring Seal stands up to most fuels Rugged steel construction with zinc plating Not recommended for engines over 300 cc