26 Piece Set - Includes 20 Diamond Burrs, 5 Thin Diamond Cutting Wheels, And Metal Mandrel. The Diamond Bur Bits All Have 1/8" Shanks, and The Mandrel For The Diamond Cutting Wheels Has an 1/8" Shank. The Diameter of The Diamond Cutter Wheels is About 1".COMPATIBLE WITH: Dremel Tool, WEN Rotary Tools, Die Grinders With 1/8" Collets, And ALL Other Brands of Rotary Tools.Works On ANY Type of Stone, Rock, Glass, Porcelain, Ceramic, Tile, Concrete, Brick, Mortar, Cement, Gemstone, Sea Shells, Grout, Epoxy, Fiberglass, Hard Resin, Plastic, And Much More.Works On ANY Type of Metal, Such as Titanium, Steel, Stainless Steel, Iron, Chrome, Tungsten Carbide, Cobalt Chrome, Brass, Bronze, Aluminum, Copper, Gold, Silver, Platinum, And More.For Stone And Tile Work, Jewelry & Lapidary Use, Masonry Work, Home Repair, DIY, Hobby / Modeling Projects, Engraving, Etching, Inscribing, etc. Fits dremal tool, 1/8 inch die grinder, 1/8" rotary tool, and cordless power drill. These diamond tip drill bits and diamond cutter discs are for cutting, carving, notching, grinding, drilling, engraving, etching, and inscribing stone, metal, glass, gem stone, concrete, glass bottle, bathroom tile, wall tile, floor tile. They have a long 1/8" shaft.These assorted diamond coated bur drill bits are great for a mason or jeweler. This assortment of diamond grit burr bits includes 1mm, 2mm, and 3mm size micro burr bits, and diamond cut off wheels. The small rotary file bur bits are for engraving. This 26 piece combo kit is a mix of burs and wheels. The diamond tip bur bits come with a hard plastic case. Great for milling, grinding, as stone carver bits, jewelry drill bits, or for tile cutting etc.This Diamond Bur Set Includes The Most Popular Shapes And Sizes of Burrs, Such as Cone Shaped, Cylinder Shaped, Ball Shape, Needle Point, Oval, Round Nose, Flat Top Cylinder, Wheel Shaped, Pointed Tree Shaped, Flame Shape, And Tapered Cylinder Shapes.