Product details:

Series 41 manifolds are also available with larger, easier to read 3-1/8" color-coded gauges in rugged steel cases with polycarbonate crystals. The Yellow Jacket 42006 gauges feature 1% accuracy (Class 1) for an exact reading in critical charge systems. Packaged in a clear vacuformed clamshell for easy recognition and review Large 3-1/8" (80 mm) gauges feature steel cases with polycarbonate crystals.