4mm Pneumatic Connector Quick Connect Straight Push-In Compressed Air Fitting Plastic Air Line Tube Fitting 30 Pieces

Size: 4mm gauge pneumatic connector connection, suitable for PU/PE nylon air tubing with a 4mm outer diameter. 30 PU-4 fittings in total to meet your daily needs.Easy to use: Simple push-in design for connecting to the tubing and ensuring a secure connection. Simply insert the tubing into the bottom of the fittings; no additional sealing is required.Convenient: Quick-connect fittings are easy to install, flexible, and space-saving. They can be rotated 360 degrees. The release ring features an oval design for easy removal.Wide application: Widely used in automated production equipment in industries such as machinery, electronics, automotive, packaging, air compression, vacuum, pneumatic systems, etc.