Copper and plastic This air regulating valve is made of high quality copper and durable plastic which can ensure a long service life. Tooth inside There is a tooth to the Inside the connection point, the pipes can be connected tightly and will not be easily disconnected. Good sealing performance This air regulating valve has been designed to connect the design in order to ensure good sealing performance. Easy operation This air controller can be easily connected with just one push, no special tools are required. Wide applications This air flow regulator air can be widely used for residential renovation and for industrial purposes. Specification: Material: Copper + Plastic Shape: t Size: 4mm; 6mm; 8mm (optional) Package list: 1 * pneumatic connection Note: The actual color of the product may differ from the photo due to the light. There may be a slight deviation in the measurement of the product.