High quality, perforating replacement blade cartridge for Leitz Precision Office Trimmers (product codes 90270000 & 90280000) which will effortlessly perforate up to 5 sheets of A4 paper (80gsm) with speed and precision. The circular rotary blade is enclosed inside a plastic cartridge making it safe for daily use at home, in the office or a classroom. It is quick and easy to replace by simply dropping the cartridge into the ergonomically designed, easy-grip trimmer head. A straight and a wave cut blade cartridge are also available. With this replacement circular rotary steel blade, you have peace of mind that your high quality paper trimmer will provide accurate trimming for many years.