I am very pleased with the personal advice given by Bill when I purchased an Ultrasonic cleaner recently. I had been looking to buy a cleaner for a while now to clean small engine carburetors , which will give many years service rather than the cheapest, my advice is speak to Bill about your requirements and purchase a quality machine , rather than from Amazon and other online retailers where you cannot discuss your requirements. The cleaning ability of these cleaners are simply amazing, shifting many years of grime and contamination, inside and outside the carburetor and the jets .I also recommend the carburetor cleaner sold along side the cleaners. Thank you Bill, for all your help and advice, it is so good in this modern age to speak to person who knows his product and does what he says. I ordered the machine at 12.30 lunchtime , it arrived at 8.30 the next morning.