1/4" ID Hose Fuel Tank Vent 1/4"-18NPTF Thread For Both small and large tanksSmall 1 4" Hose Double Barb Fuel Tank Vent Assy FTA V 40 For Both small and large tanks 1 4" 18 NPTF Thread Pitch 1 4" Double Barb Hose ID 3. 04" Length 4 Hose Air Volume Full Function Vented Made of Brass Versatile Application: This 1 4 inch fuel tank vent is designed for a variety of fuel tank applications, suitable for both small and large tanks. Specifications: This vents have a thread pitch of 1 4" 18NPTF Air Volume: Four air volume holes, this