The product is a set of 10 SMC ASN2-N01-S thumb screw adjustable exhaust port flow controls with a 1/8" MNPT pipe size. Made of nickel-plated brass, these valves operate manually and can adjust the flow of air. They have a pressure range of 0 to 145 psi and a temperature range of 23 to 140 degrees F. The thumb screw adjustment feature allows for precise control over the exhaust port flow, making them ideal for use in various industrial applications.
eBay