This cordless power tool has multiple uses - grinder, sander, wire brush, polisher, carving or cut-off tool. It has variable speed which is operated easily using a speed dial on the console. There is accessory storage built into the console for the most frequently used tools. The pen-shaped holder is attached to a flexible shaft (910mm) for ease of use. There is a simple to use on/off switch located on the console. Supplied with over 30 accessories. D20 batteries and chargers sold separately. The D20 interchangeable battery system allows you to combine the same battery/batteries with any of the tools within the D20 series.