The product being described is a set of 10 Amal concentric carburettor tops for the 600 Series, fits 626 for BSA Bantam motorcycles. Made in the United Kingdom, these new old stock (NOS) carburettor tops are quality components for enhancing the fuel delivery system of motorbikes. Designed by the reputable brand Amal, these carburettors are a reliable choice for motorcycle enthusiasts looking to upgrade or repair their vehicles with authentic British parts.