Die grinders are a type of hand-held power grinder used for grinding, sanding, honing or polishing material (typically metal, but also plastic or wood).
A straight die grinder has a head that runs parallel to the tool shaft, whereas an angled die grinder has a head that turns at a right angle. Angled die grinders are better for getting into tight spaces and confined spots. Straight die grinders are better for getting into narrow spaces.
Straight die grinders are commonly used by metal workers, machinists, automotive professionals and restoration tradesmen for: