Very nice machine for ac work. You can tell ot was built strong and will last for years to come. Love the fact it does R134A. And 1234YF. and it already had holding bottle for both separate freon. Even has a SD card slot to keep track of customer cars, and built in printer. The LCD touch screen is amazing and so easy to use. Also this machine does hybrid vehicles. So very pleased with my purchase. And recommend to any friend or automotive shop. Thanks vevor.