Features and Benefits:Works when ratchets, wrenches and sockets don't fit;Air hammer powered shockit sockets to assess, loosen, and remove frozen 02 sensors;Non-slip self centering air hammer angled punch for limited access applications;Removes knock sensors on Kenworth, Cummins, International, Detroit & Volvo diesel truck engines;Includes low profile design for limited access and long profile design for deep recessed Ford, Toyota, and Lexus applications