This is a set of 12 Pure Crystal semi-circular filters (two boxes of 5 filters each, plus 2 individual filters) and 2 silicone covers. As shown in the photos, the boxes are slightly crushed, but the product should be usable without issue. Please refrain from purchasing if you are concerned about this. New, unused, water-softening filter, GEX, for cats. For maintaining lower urinary tract health (semi-circular type). Removes magnesium and calcium.