This is a great leather strop tool for that finishing touch that goes a step beyond the capabilities of stone sharpening. It is four strips of specially prepared leather, attached to a 4-sided stick. Great for micro-aligning the edge of your blade for that razor sharp finishing touch. Great for keeping your puukko knife extremely sharp between tasks. Just 4 steps to a dangerously sharp finishing touch. Includes 3 abrasive compounds for each step in the sharpening process.