Single Valve with 1/4" Schrader Mount with 1/2" Female Flare for SuperEvac Evacuation Manifold. This Component Helps Decrease Vacuum Time by Over 50% and Improves Micron Readings. Display Style: Analog, Number of Valves: 1, Features: Flutterless Gauge, Convenient 1/4 Turn Full Flow, Mounts with 1/2" Female Flare Quick Coupler, Easy Connections for Two 3/8" Vacuum Hoses, Extra Port for Electronic Gauge, Included One Step-Down Adapter, Full-Flow Valves - Non-restricting.Dimensions: 4-1/2"H x 1"W x 10-1/2"D, Weight: 1 lbs.