Accuracy is the key to performance. Precision bevels in .5, .7, 1.0, 1.5, and  2.0 degrees. With this tool the file stops cutting when the bevel is achieved,  therefore beveling the base edge, and not the ski base. TFC is compatible  with files, diamonds, and stones. This unique tool takes the guess work out of  base edge maintenance. ACCURACY IS COMPROMISED IF RISER PLATES  ARE INTERCHANGED.