The Arbortech Ball Gouge is a unique tool designed for power carving. It has a cutting ring on a 30mm spherical ball with a 90mm arm that attaches to any standard 100mm 4 or 115mm 4.12 angle grinder. The cutting action produces fine shavings rather than dust. This ball gouge gives you the ability to make smooth hollows and concave recesses in spoons or small bowls and safely undertake freehand shaping and carving. It allows you to create an interesting, dimpled, chisel-like texture when moved across a wooden surface. The perfectly engineered balance provides exceptional control and prevents dig-ins and grabbing. This offers greater control over the depth and final appearance of a project. When in use the cutting ring is self-sharpening. While one side of the ring cuts, the opposite side of the ring is polished. By simply loosening and rotating the ring, you will achieve a freshly sharpened edge. The previously used edge then undergoes self-sharpening, more than doubling the life of the cutting ring. Includes key for adjusting the cutter.