【High Quality Bulb Pump】Our oil bubble carburetor is made of high quality plastic, sturdy and durable. Since the general replacement primer bulb is chemical and oil resistant, the snap-on primer bulb is unlikely to be damaged by the action of fuel and has a very long service life 【Widely Used】The oil bubble carburetor is suitable for lawn mowers, chainsaws, blowers and trimmers. They work like the originals and are very suitable for quick plug-and-play maintenance of the tools. 【Easy to Install】The brush cutter primer pump is very easy to install. Just remove the air filter cover, the old primer ball and disconnect the fuel line. Reassemble with a new snap-on primer and you're done