Regulator has three 1/8" pipe ports and has been anodized for corrosion protection. Racer can pick pressure in Regulator Pressure box. Most common on a Lenco is 150/250 and a B&J 150/400. When ordering for example post in the Regulator Pressure box #150 #250 or #150 #400 or if you need something different post it in the box and RBS will be happy to try and accommodate.