The Swix XF Pocket Edge Sharpener is an excellent pocket size file holder that will come with a file for sharpening steel edges. This Pocket Edge Sharpener serves a dual purpose. One it has a side edge at 88 and 89 degrees and the other feature is a base edge at 0.5 and 1 degrees. The handy pocket size makes it easy and convenient to carry around. . Tool Type: Edge/Base Guide, Model Year: 2013, Product ID: 247224