Dremel 107 Engraving Cutter is for engraving, carving, and routing in a variety of materials such as wood, fiber, plastic, and other soft materials, excluding hardened ones. Designed with a 1/8" shank diameter and a bit diameter of 3/32", this cutter precision and versatility for your detailed projects. It is part of a range of engraving cutters that all feature the same shank size for easy compatibility with your rotary tool, making it an essential accessory for creative and intricate work. Model Number: 107