Name: Tube Connector, Pneumatics, Pneumatic Connector. Model: TPW Y Reducing. We supply various Tube Connectors (Pneumatics, Pneumatic Connector) which are widely used in pneumatic piping, with superior quality, excellent service and competitive prices. Model: TPW Y Reducing. OEM is available. 1) O.D. of tube:Φ4 / Φ6 / Φ8 / Φ10 / Φ12 / Φ162) Thread type:M5*0.8, R1/8, R1/4, R3/8, R1/2, R3/4