designed for use in the field complete sharpening solution requires no assembly in the field. The Guided Field Sharpener is a compact knife and tool sharpener designed for use in the field. Built-in 20 degree angle guides ensure a consistent bevel angle across the entire edge of the blade. Five abrasive steps provide a complete sharpening solution. All elements are self contained and require no assembly in the field.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }