We have our version of the (ARO) air tool, it is called the PaleoAro.
 
We have adapted and modified this tool to make it fossil friendly. Our improvements include a front end and bushing that is much harder and supports our solid tungsten carbide stylus. It also allows you to use several different lengths and styles of stylus.
 
Each tool comes complete with stylus, hose and coupler. Ready to plug into your compressor and go right to work.