GetWetStore Pony Bottle Tank Small Pressure Gauge Pony Bottle Gauge has two (2) different pressure unit display for your preference: BAR range from 0 to 350, and PSI from 0 to 5000. Both are easy to read. Design to check pressure directly without hose Compact small design 0.85 in x 0.85 in only and weighted under 8 oz Ready to install with HP O-ring equipped Comes Complete With A Full Manufacturer Warranty!!!