Cartridge of 20 boxes of 120 slim filters (small model) in 5.7mm sticks - portable: slipped into a pocket or in a package these filters can be taken everywhere with you. - hygienic: cellophane filters stay clean and dry. - slim format: the most dynamic format on the market stick of 6 pre - cut filters box of 20 sticks = 120 filters cartridge of 20 boxes or 0.82 eur per unit.