The 8G813V40369 is a Dremel 800 series rotary tool. It is a versatile tool that can be used for cutting, grinding, sharpening, polishing, and engraving in a variety of materials. It features a powerful 1.0 amp motor that is much more powerful than other rotary tools in the same class and has a variable speed range of 5,000 to 35,000 RPM. This allows the user to make precise cuts, grinds, and details. The 8G813V40369 also has an ergonomic, slim design and comfortable grip for ease of use. The tool also comes with a variety of different bits and accessories that are ideal for many different applications.