Check the listing for details. 3Pcs Clear Elbow Fitting, 16mm/0.63" 45 Degree Acrylic Pipe Fitting Adapter. Condition: New. Listed at 10.70 USD. Description:Material: The pipe fittings are made of thickened acrylic material, allowing for clear observation of water flow. They are not prone to yellowing or embrittlement in humid environments, have good weather resistance, and can be used both indoors and outdoors.Features: Elbow pipe connectors enable quick and easy pipe 45-degree connections, allowing for the change of water flow direction. Their features a polished finish for clear visibility, allowing for the timely detection of any potential blockages.Convenient to Use: Installation is easy by selecting an elbow fitting with the appropriate inner diameter based on the pipe size. The thickened pipe adapter provides strong pressure resistance and good sealing.