http://tinyurl.com/mqbyzzg<P>Oregon 30846 12-Volt Sure Sharp Chain Saw SharpenerProduct Review<P> Click on the link for more reviews<P>Easy to use<P>Easy to keep chain cutting like new<P>Works from 12 volt battery for in-the-field sharpening<P>Includes two sharpening stones<P>Quick-adjust sharpening guide to obtain uniformly ground cutters<P>
