【copper+plastic】This air control valve is made of copper and plastic, has a long service life. 【connect tightly】There are tooth inside of the valve, the link can be firmly linked, it will not be easily disconnected. 【good sealing performance】This air control valve has a fine workmanship to ensure good sealing performance. 【easy to connect and disconnect】Easy and quick tubing connections with no special tools required, just need a simple push. 【wide applications】This air controller can be widely used in home improvement and industrial purpose ,it is necessary component for you to control the of air., Manufacturer: Hilitand