The Precision Carving System™ by Arbortech™ is the smallest attachment in the power-carving range. Including the mini ball gouge, this three-piece set will open the door to more intricate power carving, detailing and texturing. The mini ball gouge has a 15-mm-diameter ball-shaped cutter. It includes a universal base that, when fitted to a standard 4" to 4-1/2" angle grinder with a 5/8" spindle or Arbortech Power Carving Unit, allows users to interchange the precision carving and sanding bits to carve smaller radii, intricate details and fine textures in wood. System includes (1) universal base, (1) mini ball gouge, (1) barrel carver, (1) drum sander, (1) 60-grit sanding drum, (1) 120-grit sanding drum, and (2) Allen keys.