The Shuttle Guage is the best solution for filling and pressure checking your canister style shocks! This Versatile mini-gauge attaches to a nitrogen fill unit, or can be used alone to check your shock pressure. The gauge face rotates 360° and reads from 0 to 300 psi which covers every Drag Race shock we have come across, including Penske/PRS, Afco, Menscer and QA1. The Shuttle Guage is compatible with Presta and Schrader valves and features a precision bleeder valve and ‘Pressure-Rite’ anti-air loss connector.