Dynabrade® NITRO DGR Angle Grinder Dynabrade The Dynabrade® NITRO DGR angle grinder is a pneumatic industrial tool designed for deburring, grinding, and surface finishing on metal and alloys. Powerful and ergonomic, it provides excellent control when working on edges, welds, and hard-to-reach areas, making it ideal for industrial maintenance, metal fabrication, and demanding surface treatment applications. Learn more