The Brooks Instrument 5866 RT Series Pressure Controller, model number MOD 5866RB1A1C4Q2SA, is designed for controlling pressure in gas applications, specifically for AR/HE gases at a flow rate of 1 SLPM. Made in the United States, this pressure controller is calibrated at a reference temperature of 0°C and belongs to the 5866RT series. This product is ideal for use in semiconductor and PCB manufacturing equipment, providing precise and reliable pressure control for industrial applications.Please contact us if you need a shipping quote outside the USA. We can be much more accommodating on price than what Ebay shipping options show.