− Decrease quantity for Gauge, Cobalt, Boost/Vacuum, 30 in. Hg./45 psi, 2 5/8 in., Analog, Mechanical, Each Quantity + Increase quantity for Gauge, Cobalt, Boost/Vacuum, 30 in. Hg./45 psi, 2 5/8 in., Analog, Mechanical, Each Add to cart