The ColorFit Color Connector System from Milton Industries allows users to quickly match compressed air plugs and couplers. ColorFit is available in M-style (red), A-style (green) and T-style (blue) profiles. The new ColorFit V-style HighFlowPRO (purple) provides up to 70 percent more flow than standard couplers. All ColorFit plugs and couplers are interchangeable with standard fittings.
Link: Milton Industries