Our new ai easyvac 9 cfm dual-stage high speed sliding-vane rotary compact vacuum pump with Kf25 vacuum connector. Comes with all necessary fittings and a exhaust oil mist Filter which also returns trapped pump oil back to the pump and makes the pump quieter to run. It is important to note that pumps should always be ran in a well ventilated area. Free Kf25 flexible Stainless steel bellow (3.3 ft), clamps and centering Rings set ($219 value) included.