●Main nozzle size M6: The box consists of 10 nozzles of 6 mm in the following sizes, 50-52-55-58-60-62-65-68-70-72 meet your different needs. ●High-quality material: Main nozzle set is made of high-quality brass, which is characterised by high strength, high hardness. They will last a long time ●Easy to store. The carburettor nozzle set is compact, easy to store, very practical and high quality. It is your best choice ●Professional carburettor nozzle: Carburettor and ejector are ideal screws that have been updated. The carburettor nozzle set are processed with a very tight tolerance to improve performance ●Multifunctional: main nozzle set are ideal screws that have been updated to improve performance so that buyers can maximise the performance of existing carburettors