The Optical Fiber Clean Pen is a kind of cleaning tools with high-performance and new-type fiber adapter. It is designed to specially work well with the female connectors. This instrument cleans the ferrule end faces removing dust, oil, and other debris without nicking or scratching the end face. The clean pen is specially designed to clean the APC and UPC connector. The operation of cleaning pen is easy and exact. Otherwise, it will keep the low cost for a long time. Its working life is more than 800 times.