matco part number se1315.
  Improved blade guard and valve seat to enhance performance
   Rear exhaust with muffler directs air away from the work surface
     Cuts pipe, mild steel, aluminum, plastic & sheet metal up to 16 gauge. Not recommended for fiberglass
       includes: sl14 air swivel and 3 bi-metal blades (18 tpi, 24 tpi, 32 tpi)
           RL1314ABG - Blade Guard
              RL1314BH - Blade Holder                         
https://www.matcotools.com/Catalog/toolcatalog.jsp?cattype=T&cat=2256&page=8�used once on thin wainscoting. includes box and blade removal and install tools $125
will also throw in air tool oil.