If you are going for a DeWalt sharpening tool, then you choose a piece of professional tools. This strong brand has been working for years on high-quality and durable angle grinders. The DeWalt angle grinder is characterized by precision and reliability and it is not for nothing that many professionals swear by this top brand. Determine what type of grinding tool you need based on your planned grinding job. A 230 millimeter angle grinder for heavy work, or a compact 115 millimeter grinder for the finer jobs.