Review on Yellow Jacket 4 Valve Rebuild Replacement by Alex Jones

Can't complain about money saving, better buy a new gauge set. The scary part was plugging in nitrogen to blow out the old sight glass that doesn't work. If you don't want to go out, after removing the retaining ring make sure it's pointing at a pile of sand or some kind of brush before adding nitrogen. It cracked first before exploding like a shotgun bullet.