2018 Mi-T-M rotary screw compressor. 115cfm@100psi. 37hp Kohler engine with Gardner Denver air end. I bought the unit with 3 hrs and changed all filters and fluids just to know what was in it. I use 2 smaller 80 cfm compressors engraving monuments in cemeteries. This one sits way more than it’s used. When it is used it’s only run for 5-10 minutes while engraving a stone. Fits in the bed of a light duty pickup and weighs ~650lbs. Very nice unit like new I just don’t use it enough to keep it.