Shuttle Gauge Versatile mini-gauge attaches to pump or can be used alone. Gauge face rotates 360 degree and reads to 300 psi for use with tires, forks or shocks. Works w/Presta and Schrader valves and features a precision bleeder valve and Pressure-Rite anti-air loss connector. Reads to 300 psi for use with tires, forks and shocks. Internal check valve prevents air loss when removing gauge from tires, forks or shocks. Air release button for precise adjustment of tire pressure. Unique internal check valve on our shock pumps isolates the pump from the fork or rear shock preventing air pressure loss during removal of pump head.