ITEM NAME:20x OD 6mm&8mm 1/2'' Y Union Pneumatic Push Connector Air Line Fittings New Description: Recommended Tubing Material: Polyurethane, Nylon, Polyethylene, Polypropylene Simple push in design for connecting to the tube and provide secure connection, requires no extra sealing Fluid: Air,Vacuum Normal Pressure Range:0-0.9Mpa Maximum Pressure:1.32Mpa Low Pressure Range:-99.9-0Kpa Temperature: 0 to 60Â °C Fits for Tube OD:1/4''(6mm) Size:Approx.1.48‘’X1.01''X0.47''/38mmX26mmX12mm Fits for Tube OD:5/16''(8mm) Size:Approx.1.56''X1.13''X0.55''/40mmX29mmX14mm Material:Brass & Plastic Package Includes: 20 Pieces Y Union Pneumatic Connector.20 Pieces Y Union Pneumatic Connector. Fits for Tube OD:1/4"(6mm). Fits for Tube OD:5/16"(8mm). Fluid: Air,Vacuum. Simple push in design for connecting to the tube and provide secure connection, requires no extra sealing.