The Work Sharp Knife and Tool Sharpener made a lot of waves when it was introduced. For the first time, a portable, user-adjustable, and intuitive sharpening system was available with abrasive belts instead of stones (which is what knife manufacturers use). An amazing tool though it is, Work Sharp has listened to feedback from customers, and developed the Knife and Tool Sharpener MK. 2. Upgrades include more variable speed settings, adjustable front- and back-side angle guides, leather coated blade guides, and improved user serviceability. This amazing tool will enable even a beginner to get keen edges on kitchen knives, pocket knives, hunting knives, axes, shovels, scissors, pruning shears, or whatever edged tool you have.