Dremel 114 High Speed Cutter The product is 5/16" Engraving Cutter Compatible with all Dremel rotary tools. A versatile, high-quality cutter made of high-grade steel for use on wood, plastic and soft metals. Ideal for shaping, hollowing, grooving, slotting, inlaying and making tapered holes in soft metals, plastics and woods especially on curved surfaces.