Lathem Long-Life Nylon Ribbon Model 7-2CN This durable ribbon is designed to work with many of Lathem's current and retired mechanical time clocks including series 2000, 3000, and 4000. The ribbon will work in the 8000 series clocks, however the ribbon life will be shorter because of the 8000 series' longer ribbon path. The 7-2CN ribbon comes packaged in a sealed plastic inner-liner to prevent the ribbon drying out prior to opening and is made from heavy-duty nylon designed to stand up to the repeated impact of Lathem's mechanical time clock print mechanisms. An important feature of the 7-2CN is it's reversing grommet which triggers the Lathem Ribbon Reversing Mechanism to extend the usable life of the ribbon. With this reversing grommet, the Lathem 7-2CN ribbon reverses when it reaches the end of the ribbon and reprints with the same ribbon until the print becomes too light. Without this feature, the ribbon must be replaced as soon as it reaches the end and it must be constantly monitored to ensure that it doesn't run out in the middle of a pay period when a replacement ribbon may not be available.