A dull chainsaw wastes time and effort. Not to mention, creates quite the safety hazard. And replacing the chain, or taking it in to the shop, can be a real hassle in both time and money. This Electric Sharpener does it all, in the comfort of your own home. Mounts to any bench, wall or vise for easy access and works on all popular chainsaw widths. 4,200 RPM grinding speed gets the job done quickly. Uses 85W of power, just plug into any 120V wall outlet.