Airtec Valve / Core Removal Tyre Inflation Tool 4x4 Tire Inflator / Deflator97. 5058 CORE REMOVAL TOOL FOR CARS The Core Removal Tool (CRT) is designed to reduce inflation deflation time by allowing the operator to remove the valve core safely during the process. Using the tool eliminates the risk of eye injuries from flying valve cores. The operation is simple. After removing the valve cap, the CRT is first clipped onto the valve stem. The CRT stem is then pushed in to engage the valve core. By rotating the stem anti