Good to know- This Bosch sander is cordless, so you can sand metal or wood with no cable in your way- Use the triangular plate for corners or edges, and the rectangular plate for big surfaces- It has electronic speed preselection - that means you can adjust the speed to suit what you're sanding- You can change the sandpaper quickly with the hook-and-loop system- The microfilter dust box helps keep your workbench clean - you can even attach a vacuum cleaner_______________________________Please note: This sander requires the Bosch 18V Power for All battery (sold separately).