Cartridge system for mixing and applying a mix, in particular a medical cement, comprising at least two cartridges arranged parallel to each other and an outlet opening, wherein the cartridges each comprise at least one opening, which openings connect the cartridges to the outlet opening, and the cartridges are laterally delimited by cartridge walls and each comprise a delivery piston for driving starting components of the mix out of the cartridges through the openings, and wherein at least two delivery pistons are firmly connected to each other, wherein the at least two delivery pistons are firmly connected to each other via at least one web, the cartridge walls of the cartridges connected via the web or the webs comprise slits arranged parallel to the axis of the cartridge, wherein the width of the slits is suitable for receiving the web or webs, and, upon a movement of the delivery pistons into the cartridges, the at least one web moves through areas of the slits.
