The FILN05 is a final-device pneumatic air filter with straight plastic barb fittings for 1/4" OD poly tubing. The FILN05-B model comes with 90° bent fittings. The microfibre disposable filter unit consists of a HEPA Microflex™ filter tube permanently bonded into a sealed nylon casting. As the filter shows signs of contamination, simply remove and replace. A replacement model FILN05-R is available without the barb fittings. NOTE: Not for use with synthetic lubricants.