Features Make your life easier: easy to install, no tools are required to make a connected or disconnected connection. Easy to use: simple and manoeuvrable, the plastic tube body can still rotate 360° even after installation. High pressure resistant and will not trip Thoughtful design: the release ring has an oval design that facilitates disassembly. Good quality: the thread is pre-coated with leak-proof PTFE adhesive to ensure good sealing performance. EXCELLENT CUSTOMER SERVICE We care about the feelings of every customer. If this product does not meet your expectations, please do not hesitate to contact us. We will do our best to serve you. Specifications: Material: brass and plastic. Model: SL4-M5. Tube AD: 4 mm. Theme: M5. Colour: black. Size: approx. 3 x 2.5 cm / 1.18 x 0.98 inches. Quantity: 20 pieces. Weight: approx. 152 g. Box contents: 20 x pneumatic quick coupling. Package List