hilmor 1839134 R22-404A-410A 2-Valve Manifold Built with a forged aluminum body and designed to be leak-resistant with replaceable stainless steel valve seats Offers easy access with front-mounted hose positions and a permanent location for temperature clamps A rubberized handle makes it easier to use in wet and dirty environments Improved graphics and high-contrast colors deliver precise readings at a glance A pressure reminder allows you to set the pressure ring and reference it later