Professional air hammer with variable speed trigger, built in power regulator and quick change chuck. This model can provide 2200 blows per minute (bpm)with an air hose size of 3/8" ID and a air inlet size 1/4 BSP providing an average air consumption 4.0cfm. This diesel injector extractor allows effective transmission of impact force and vibration to any adaptor with a 5/8" thread. This set includes 7 diesel injector adaptors: Siemens (2), Denso, High Pressure M12 Delphi, M16 Denso, Bosch Dual Connector and a valve seat removal tool for Denso, and off-line injector for access and a Bosch injector dismantling tool.