The American Perforator 400 8 security perforator imprints up to eight digits. This model is primarily used for code numbering and numerical identification of all types of office documents. Bookkeepers, payroll clerks, secretaries and more will find an economical solution for tracking and storing documents with the 400 8 perforator. One of the most popular and longest lasting security perforators, the Model 400 8 perforator continues to be used for code numbering data and for numerical identification of all types of documents. The number and code numbers can be used for labels, applying expiration dates, i.d. tags, and more.