Security Blank checks offer the quality and consistency you need to print your own. Multi-purpose business checks cost less than custom printing, and work easily with your accounting software. These affordable, Security blank top laser checks help you manage all your accounts with one check stock. 2 tear-off bottom vouchers give both you & payee a detailed payment record. Sheet format fits all standard laser & inkjet printers. Built-in security such as chemically sensitive paper, microprint border, invisible flourescent fibers, erasure protection, security screen & warning box. NEW SECURITY FEATURES! High resolution border with intricate engravings that do not reproduce well on copiers, Thermochromatic ink reacts to deter and detect copying, and unique multi-color background pattern discourages copying and cut and paste alterations. Visible security features. Advanced security features include chemical detection was area on back of check, visible embedded fibers, padlock icon, UV dull paper, true watermark. Choice of product color: Blue, Green or Maroon Designed for use with software that prints the entire check, bank information & MICR numbering and should only be used with MICR cartridges which contain magnetic toner. Shrink wrapped in packages of 500 checks.