The accusharp all-in-1 pruner, knife & tool sharpener is custom made for sharpening pruners, loppers, shears, knives, axes, hatchets, mower blaeds, scissors and any other single or double edged tool.The pre-angled diamond honed tungsten carbide blades are exactly what you need to restore and sharpen an edge.Ergonomic design with built in thumb rest, preset at 21 degree angle, recess allows pruners and loppeers to be sharpened without disassembly.Sharpener Material: Diamond Tungsten Carbide