Stainless steel,The high-quality stainless steel material is , corrosion-resistant, and has a long service life. Easy to store and carry,The ball valve is easy to store and carry, you can put it in your pocket or bag when not in use. High performance design,Our stainless steel ball valves are designed to provide a smoother and more comfortable airflow. It is not limited by the installation direction, and the flow direction of media can be arbitrary. After-sales service, Please contact if you have any questions., Manufacturer: NJJIHUI