⁺12mm Step Aluminium Inline Straight Check Valve Fuel Diesel Gas Liquid Air One
Suitable for use with petrol, diesel, biodiesel, water, coolant, oil, air/vacuum. Construction: Aluminium. 6mm/0.24in, 8mm/0.32in, 10mm/0.39in, 12mm/ 0.47in. The life of aluminum head for using is longer than plastic heads.