With the Philips JC305/50 cleaning cartridge 5-piece set, your Philips cleaning station is instantly ready for use again. You can easily click the cartridges into the station. The cleaning fluid rinses your shaver heads in a few minutes. Leftover hairs, grease, and dirt are quickly removed and the blades remain sharp. The set consist of 5 170-millimeter cartridges. This set allows you to clean your electric shaver for about 15 months.