quickly diagnose internal engine problems such as bad rings, valves and leaking head gaskets. Kit come complete with adapters for most applications.dual 2-1/2″ gauges feature chrome bezel and rugged protective outer boot.scales read 0-100 psi and 0-700 kpa.pressure regulated manifold includes quick couplers.long flex 24″ 14 mm hose.10mm, 12mm and 18mm thread adapters.blow molded hard case with removable lid.detailed instruction chart.