This tried and true filter pumps fluid from one container, through three filter pads and back into another container. Designed for home winemakers or professionals who will be filtering more than 10 gallons at a time. Has a built in Flojet pump, which can be used to rack wine from one container to another by bypassing the filter pads. This item is LIKE NEW and was only used a couple of times to filter mead, It comes with 4 packs of filters and 4 plates. This retails for over 475 dollars but I am selling for 275 to move this item.