This part is a 8G4055.0X6.0W Dremec Rotary Tool. It is an electric mini angle grinder with a 6-inch wheel diameter for grinding and cutting metal. It is lightweight and versatile, with a variable speed range from 0 to 40,000 RPM. This rotary tool is ideal for sanding, cutting, drilling, polishing, and engraving a variety of materials, including metal, plastic, wood, and tile. It also includes a comfort grip handle and a 1/4" chuck for accessories. It is suitable for both hobbyist and industrial applications.