1Fitment: The chainsaw carburetor is replacement for Stihl MS210 MS230 MS250 021 023 025, please confirm whether your model is applicable before buying. 2Function: As a mechanical device, carburetor uses the kinetic energy of the intake air flow to realize the atomization of gasoline, which can improve the engine work efficiency and increase the engine life. 3Specially Designed Structure: The carburetor air intake is not only beautifully decorated but also improves the airflow structure, ensuring stable atomization performance and sensitive response. 4Premium Material: The carburetor is made of metal, which has high strength, heat resistance, high reliability, and long service life. 5Simple Installation: The carburetor can be taken directly to replace your old one, easy to install, does not consume much time, and does not have complicated processes.