Super sensitive filter will remove oil, aerosols, smoke, condensed moisture and virtually all solid particles. Filter is designed with two special filter materials, one to take out oil and fine particles and one to take water out of compressed air. Super easy install: Just hand tighten the filter directly to the inlet fitting of your spray gun. Tip: Do not over tighten with a wrench, just hand tighten til a leak proof seal is made. Tip: We recommend changing this filter once a week in production spray paint operations. Tip: Solvents will damage the filter, do not attempt to clean it. Tip: Do not jerk the hose around with the spray gun as this could cause the filter to break. Grasp the housing when moving it.