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.