Features Made from premium materials and built with precise CNC machine, it is good quality and durable. Ultra mini size, not taking up much space in the machine. Uses good quality sealing ring, which ensures excellent air tightness and prolongs the service life. No spark during work, suitable for special occasions requiring a high safety factor. Each of the valves can control the flooding of air in the opposite direction. Specification: Material: metal. Colour: as shown in the picture. Size: approx. 5.5 x 3.2 cm/2.16 x 1.26 inches. Weight: approx. 151g Features: Uses good quality sealing ring, which ensures excellent air tightness and prolongs the service life.Each of the valves can control the air flooding in the opposite direction.No spark during work, suitable for special occasions requiring a high safety factor.Made from premium materials and built with precise CNC machine, it is good quality and durable.Ultra mini size, not taking up much space in the machine.List of Packaging: 1 valve Package List