Deatschwerks proved regulator. Designed and tested for E85 (works well with gasoline) Suitable for 300-1000hk. Ready over 500 L / Hr. For AN6 connections. Black Enameled Aluminum Gear ratio = 1: 1 Large fiber-reinforced Nitrile membrane for best accuracy and durability Adjustable between 2,14 bar to 7 bar Ball bearing at the adjusting screw for more precise setting Dual AN8 inputs (plug included) Simple AN6 Return Bracket coincides 5mm vacuum connection 1/8 "NPT connection for pressure gauge / pressure sensor 3 year warranty See accessories for suitable nipples. AN Nipples are not included.