5PCS Micro Pneumatic Pipe Fitting — Hose OD 4mm to M5 Male Thread, Copper Quick Connector (PB) Compact, reliable quick connectors designed for micro pneumatic systems. These 5 copper (PB) fittings provide a fast, spacesaving connection between 4 mm outsidediameter hose and M5 femalethreaded ports. Key benefits Fast installation: pushtoconnect style speed up assembly and maintenance, reducing downtime. Secure connection: designed to hold 4 mm OD hose firmly to an M5 threaded port for consistent air flow. Spaceefficient: small micropneumatic profile fits tight assemblies and compact control panels. Multipiece convenience: pack of 5 allows multiple repairs or installations without individual ordering. Product attributes Quantity: 5 pieces per pack Type: Micro pneumatic pipe fitting / quick connector Material: Copper (PB) Hose compatibility: Hose OD 4 mm Thread type: Male thread — M5 Function: Connects 4 mm outsidediameter hose to M5 femalethreaded ports for pneumatic lines Performance and usage notes Intended for micro pneumatic applications where a compact, quickdisconnect style connection is needed. Pushfit action allows easy insertion of 4 mm OD hose; tighten into an M5 femalethreaded port to secure the male thread. Designed to simplify tubing layout, service, and component swaps in small pneumatic systems. Typical applications Industrial automation and control panels: connect small air lines to valves, sensors, or actuators with M5 ports. Robotics and miniature pneumatic actuators: compact fittings for confined spaces and precision equipment. Laboratory instrumentation and test rigs: fast connections for temporary setups, experiments, or prototype assembly. What you get Five (5) micro pneumatic copper (PB) quick connectors sized for Hose OD 4 mm to M5 male thread, ready to install in compatible systems.