One Way 6/8/10/12mm 4 Size Valves Aluminium Alloy Fuel Non Return Check Valve One Way Fit Carburettor
https://www.vogueparade.com/shopping/EN/200282142/1/32964309063/one-way-681012mm-4-size-valves-aluminium-alloy-fuel-non-return-check-valve-one-way-fit-carburettor//