TEKTON 4592 Air Filter/Regulator/Lubricator Unit Complete Air Management System Includes Filter, Regulator, and Lubricator Filter Traps and Removes Harmful Water Vapor and Debris Particles from Compressed Air Supply Easy-Clean Filter Canister with Brass Drain Valve Regulator Features High-Contrast Dial Face and Oversized Adjustment Knob Micro-Fog Lubricator Creates a Light Oil Mist to Properly and Consistently Lubricate Moving Air Tool Parts