Product: 10 PC pneumatic quick-connect fittings — metric male threads Why choose these fittings Fast, reliable connections: push-in design lets you connect and disconnect air tubing quickly without tools, reducing installation time and downtime. Wide compatibility: metric male threads cover common machine and pneumatic ports so you can match fittings to existing equipment. Durable, lightweight material: made from PC (polycarbonate) for good strength and dimensional stability in typical pneumatic applications. Leak-reducing seal: engineered to form a secure seal with push-in tubing, helping maintain system pressure and reduce air loss. What’s included Pack of 10 pneumatic push-in fittings Various metric male thread sizes such as M5, M6, M8, M10, M12, M14, M16, and M20 Includes the PC4 M8x1.25 type to fit M8x1.25 ports and tubing commonly used in compact pneumatic systems Key features at a glance Function: quick air connectors designed for pneumatic systems; push-in tubing attachment for ease of use Thread compatibility: metric male threads (M5–M20 range listed), including PC4 M8x1.25 Material: PC (polycarbonate) — lightweight and dimensionally stable for typical air-line pressures Performance: suitable for standard pneumatic applications where secure, repeatable connections are required How this solves common problems Simplifies installation and maintenance: push-in connectors eliminate repetitive wrenching and reduce the time needed to swap or re-route air lines. Minimizes unwanted downtime: reliable sealing reduces leaks that can cause performance loss or trigger maintenance. Fits varied systems: the range of metric threads helps avoid mismatches between tubing and machine ports. Practical use scenarios 3D printers and filament feed systems: use the PC4 M8x1.25 fitting to connect PTFE or pneumatic tubing for Bowden-style extruders and quick filament changes. Small pneumatic tools and shop equipment: install the appropriate metric-size fitting to connect air hoses to handheld tools, air valves, or mini-compressors in a home or light industrial workshop. Automated machinery and control panels: integrate these push-in connectors into pneumatic manifolds, valves, and actuators where frequent disconnection or compact routing is needed. Installation tips Confirm thread size before installing to ensure a proper match with ports or adapters (sizes listed include M5, M6, M8, M10, M12, M14, M16, M20; includes PC4 M8x1.25). Cut tubing squarely and insert fully into the push-in fitting for the best seal. Inspect fittings periodically for wear or damage in high-cycle systems. What you get Ten PC push-in pneumatic fittings with metric male threads, including the PC4 M8x1.25 type, ready for use in a range of pneumatic setups.