This valve core removal tool kit includes 2pcs Valve Core Quick Installer,1pcs valve core removal tool,26pcs valve cores,8pcs car ac caps,you can use this repair tool kit to replace and maintain your car conditioning systems.There are different styles of valve cores,and the number of valve cores is sufficient. Prouduct introduce: R12 R134A Valve Core Removal Tool Kit. You can use this ac repair tool kit to replace and maintain your car conditioning systems. Material: The valve core removal tool is made of brass, more sturdy, long life; The pull rod is made of stainless steel, it has strong suction and can grasp the valve core firmly. There are different valve cores for you to choose from. High & Low Voltage Quick Coupler: Red-high pressure coupler, inner diameter 16mm; Blue-low pressure coupler, inner diameter 13mm. The valve can be opened and closed in just a quarter turn. Anti-slip design, easy to turn. Prouduct application: This schrader valve removal tool kit is suitable for R134A car conditioning systems; for car conditioner, household conditioner, havc maintenance etc. Package content: 2 x R134A Valve Core Quick Installer(Red-high pressure,Blue-low pressure) + 10 x R134A Valve Cores + 16 x R12 Valve Cores + 1 x Yellow Dual Head Valve Core Tool + 8 x Car AC Caps