DOT Approved 90° Elbow Union Push-to-Connect fittings from VIAIR connects airlines quickly and effortlessly, made from Nickel-plated Brass with a working pressure 0 – 200 PSI. 10 pieces NOTE: Airline must have a straight cut at connection point. Use of a hose cutter is recommended. CAUTION: As with any air line connections, sharp bends at the fitting connection may result in air leakage. DOT Approved 90° Elbow Union Push-to-Connect fittings from VIAIR connects airlines quickly and effortlessly, made from Nickel-plated Brass with a working pressure 0 – 200 PSI.