With this secondary CO2 regulator, you can dispense beer from up to four kegs with four different pressure requirements! * When dispensing beer from a multi-keg setup, you always have to be aware of the unique system pressure that is necessary for different styles of beer. Instead of using up to four primary regulators, this secondary gas regulator gets the job done with four separate gauges that precisely monitor and control the dispensing pressure of each keg. You can even completely shut off each gauge, so you know you've got maximum control. * This model of secondary regulator features the durable strength of a polycarbonate bonnet, which is lighter and less susceptible to being damaged by moisture than a traditional zinc bonnet. It also utilizes a tool-free CO2 adjustment system that's controlled by simply pulling, twisting, and pushing the cap knob. * Stop worrying about properly regulating your draft setup and step up to the efficient functionality of this 4-Way Secondary Air Regulator with Polycarbonate Bonnet! * Specs - Dimensions: 14 1/2"L x 6 1/2"H x 3 1/4"D.