This kit contains 5 sizes of straight quick connectors: 4mm (5/32 inch), 6mm (1/4 inch), 8mm (5/16 inch) and 10mm (3/8 inch), 12mm. Radiator specifications are identified by PU-4/6/8/10 models, ensuring that you can easily find the suitable connecting pipe size. This is a very practical pneumatic line connector kit that provides convenience for your genre projects. Our quick couplings can operate under working pressures of 0-1MPa, with guaranteed pressures up to 1.5MPa. They deliver outstanding performance over an operating temperature range of 0 to 60+, ensuring your workflow is not compromised by ambient temperature issues. These connectors are made of high-quality plastic material, making them tight and compact for easy use and portability. Good sealing performance ensures excellent air-tight resistance, allowing you to trust that they provide a high-quality air-tight connection. The quick connector is equipped with an integral release ring, and the structural design makes it easier and faster to install the sensor and pipe. You can set it up in no time and get started on your project faster. This push-on fitting is designed for lightweight, PU/PA/PE/PVC and pipe, providing maximum compatibility and efficiency in a variety of applications. No matter what type of plumbing work you are doing, this quick coupler kit is perfect for you. Colour:blue+black Material:plastic Package Contents: 40 x Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.