Dremel® Green AO Pointed Tree Grinding Stone is a high-quality industrial abrasive made for metals, castings, welded joints, rivets and rust.
Shank diameter: 1/8-inch
Abrasive material: Alumina
Speed: 35000 rpm maximum
Ideal for sharpening, deburring and general purpose grinding on most materials including stainless steel
Specially designed for working with conic surfaces
Use the 415 dressing stone to clean the surface of the grinding stone and restore its original shape. Can also use the dressing stone to create a grinding stone with just the right shape for that special job