SE 82331TF 30-Piece Set of Titanium-Coated Diamond Burrs, Grits 120-150 Titanium-coated diamond burrs Assorted shapes and sizes include: ball, cone, cylinder, needle point, and tapered All burrs with a 1/8" shank - compatible with most die grinders or rotary tools A versatile set for numerous projects with grits 120-150 Highly recommended for crafts, hobbies, home repair, jewelry, lapidary use, modeling, and so much more