KEM MEDICAL VAPOR-TRAK EO GAS LEAK TESTER #9101 SLIGHTLY USED GREAT CONDITION MODEL #9101 WAS NOT TESTED INCLUDES CARRYING CASE, INSTRUCTIONS AS WELL AS THE FOLLOWING: (1) SCREWDRIVER (1) FLOWMETER (1) OUTPUT TUBE (1) HUMIDIFIER (1) OUTLET TUBE (1) LEAK TESTER DOES NOT HAVE THE CYLINDER OF COMPRESSED GAS E-52 #44