The Dremel tool can be found in any hardware store and some discount stores where the battery operated/electric tools are, and pet places (sometimes carry the Dremel model specifically for pets nails). It has a small sanding band on a rotary head. I got the battery operated/cordless model Mini Mite (retails for $49.95, but you could get it cheaper at a discount place) and use the 120 grit sanding band. I just got the J-B pet catalog and see one made by Oster for the same price. The knockoffs probably do just as good a job, and are a lot less expensive.