This is a ONE way tee piece which is meant for one pipe.Enhance your showering experience by installing some of these hydromassage back jets. The jet has six spray nodes where water is sprayed from which is ideal for houses with a low water pressure as it means a low pressure water system can still create enough pressure to create a sensational hydromassage experience.The water pipe connector spigot on the back of the jet measures 10mm. This is a ONE way tee piece which is meant for two pipes.When installed, the jet will rest approximately 17mm from the wall of the shower. In terms of back jets, this is very slim, allowing the user to lean back and relax more.The diameter of the entire piece is 50mm. The depth including the water pipe tee is 55mm.The spray nozzle can be adjusted to spray in different directions.