MBW vapor extraction unit with ITRAN gas detector. Unit was designed to remove gas vapor from the area around a pipeline break and then help you find the area of the leak. This reduces the amount of area that has to be excavated. Hartz 2 cylinder diesel engine, Tuthill 5006 blower vac, filter pot, gas detector with alarm, trailer mounted, tool boxes and ground probes. Filter pots has three one inch connection and one three inch. Unit runs great and ready to work. Trailer is bill of sale only. Sold as is, no returns. Inspect before you purchase. Located in San Angelo Tx.