G-TEC's UFO filtration system has a single-blot 4" 28 micron checkable, cleanable, and re-usable filter. It has only one bolt through the center of the round filter housing, so with only fastener to loosen and tighten when servicing the filter, this reduces operating time and labor cost. The filter screens fit the two most popular heated cooler line flusher in use in today's modern transmission shops. The filter has a 1000 applications and can be used to filter most any kind of liquid, according to the manufacturer.