The Modular Inboard Air Divert-er allows you to tap into your existing Eastwood Air Management system and add two more 1/4"NPT lines. Simply install between two of the modular air management components. Compatible with all Eastwood 1/4" & 1/2" outlet filters, desiccant dryers and regulators. Kit includes 4 way machined divert-er, 2 O-Rings, modular connector and instructions. Use 12726 for outboard divert-er. Made in USA