How about Zhuo Lixin's throttle?

Zhuo Lixin's throttle is wear-resistant and practical, with complete varieties, many colors and many styles, which are deeply loved by the public.

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful. At the same time, it is also the key valve to adjust the air intake of the engine (including gasoline and air) and an important structural component of the engine oil supply system.