Top of the line fully featured.. the most powerful pump we have ever tested. Professional grade vacuum pump with universal incremental measurements. Pressure release valves on pump and cylinder. Seamless clear vacuum cylinder with universal incremental measurements. Professional vacuum pressure gauge. Flexible non-crimping air hose. Flanged cylinder base for secure vacuum seal. Tapered removable silicone secure fit donut. Clean before and after each use with soap and warm water or toy cleaner.