1/2" Heavy Duty FRL air control unit w/ auto drain C704NABrand new 1 2" compressed air in line moisture filter separator with wall mounting bracket. (F704NA). This is a 5 micron filter with a 2. 7oz bowl. This is a great quality filter with a metal bowl and an easy turn style auto drain. This filter will remove water liquid droplets and debris from your compressed air line which protects and extends the life of your air tools and provides cleaner air when using for cleaning surfaces. Specifications: Max