The CENTRAL MACHINERY™ 6 Liter Ultrasonic Parts Cleaner has a generous size tank for cleaning carburetors, fuel injectors, gears, bearings, and tools. The cleaner uses 40 KHz high frequency sound waves to clean stubborn dirt from surfaces, threads, and internal parts. It is gentle enough to clean delicate items such as carburetors, fuel injectors, hardware, jewelry, small metal parts, and eyeglasses.