Anyone who uses a knife regularly knows that having a sharp blade edge is much safer than trying to make a dull blade do the job. Designer Tom Stokes created this CRKT compact sharpener so it would be easy to have along, and keep you sharp. You simply hold it firmly on a hard surface, place the rear of the blade edge into the "V" of the carbide sharpener blades and draw the knife through, pulling towards you. This handy tool also features a flathead screwdriver, small channel blade/cutter, and bottle opener. The Stokes Keychain Sharpener also comes with a split-ring for easy carry attachment.