The Hilmor® 4-valve Aluminum Manifold is built to last with a forged aluminum body. It is designed to be leak-resistant with replaceable stainless steel valve seats, SAE-style O-rings and a securely seated large sight glass. Need faster vacuum pulls. It has you covered with a true 3/8 in bore throughout the valve. Front-mounted hose positions and a permanent location for temperature clamps result in added convenience. And it is finished off with comfort-grip rubberized handles optimally sized for easy turns. Set sold with our Hilmor® Dual Readout Thermometer and 60 in refrigeration hoses with ball valve adapters.