The M7 QA-441B pneumatic die grinder is used for grinding, sanding, and honing metal and other materials. Due to its heavy-duty performance, this tool machines dies and molds. It also handles other restricted grinding applications. This M7 air tool comes in a compact, 5.31” size that makes it very easy to handle. This grinder also comes with a 59” host that attaches to your air compressor, giving you lots of room to work.