The newest innovation in tool sharpening is Byers' All-in-1 Pruner, Knife & Tool Sharpener. Manufactured with diamond sharpened carbide, this sharpener will provide years of reliable use. Factory preset angles provide a precision edge for consistent professional results. The All-in-1's unique design makes it simple to keep sharp edges on pruners, loppers, shears, knives, axes, hatchets, mower blades, multi-tools, scissors and other single or double-edged tools.