Features:PC4-M6 pneumatic male straight quick fitting is widely used for connecting extruder.Suitable for CR-10 Series (CR-10/CR-10mini/CR-10S/CR-10S4/CR-10S5) and Ender-3 3D printer.The upper part can be inserted 4mm PTFE tube and self-locking.The thread is M6 (6mm / 0.24inch) for easily connecting.Made of high quality stainless steel with high-temperature and rust resistant, sturdy and durable.Specifications:Model: PC4-M6Suitable for Ender-3 / CR-10 Series(CR-10/CR-10mini/CR-10S/CR-10S4/CR-10S5)Material: Stainless SteelTubing Diameter: 4mmThread: Approx. 6mmItem Weight: 2.4g / 0.08ozPackage Size: 13 * 9 * 0.7cm / 5.1 * 3.5 * 0.3inPackage Weight: 3.6g / 0.13ozPackage List:1 * Pneumatic ConnectorPlease feel free to contact us if any problems, our customer service team will reply to you at the first time.