INTL MODEL:INTL-XG065 Valve Core Valve Core Quick Remover Installer A/C R134A High Low Pressure Tool Car Air Conditioning Valve Core Valve Removal Tools (2Pcs/Set) Features: Replace Valve Cores Without Discharging or Reclaiming the System Adjustable Valve Core Puller to Fit Different Valve Cores Built-in Ball Valve Retains Charge & Allows Access to A/C Auto Systems Enclosed High Side and Low Side Coupler High Pressure: Red coupler, with inner diameter 16mm. Low Pressure: Blue coupler, with inner diameter 13mm Material: Brass Valve Core: R134/R12 Length : 4.73 inch / 120mm (approx.) Condition: 100% Brand New Package Includes: 1Pc A/C R134A Valve Core Remover / Installer - High Side (Red) 1Pc A/C R134A Valve Core Remover / Installer - Low Side (Blue) Application steps: (1) Look at the spool removal. (2) Unscrew the low side (or high side) port cover. (3) Connect the valve removal tool. (4) Insert the extractor. (5) Unscrew the old valve core. (6) Pull the spool up. (7) Remove the valve core. (8) The spool is now extinguished. (9) Put the new valve core on the gown. (10) Install a new valve core. (11) Put the protective cover back on the low side port.