A really sharp gardening tool makes all the difference. There is an easy way to keep a clean, sharp edge on knives, loppers, the Nijiri Gama Hoe and other straight edged tools. The Multi-Sharp 4-in-1 Garden Tool Sharpener is easy to use and fast. Simply place the guard over the cutting edge and draw the sharpener across the blade. The diamond-honed tungsten carbide cutters quickly bring back a razor-sharp edge on the tool in minutes. This sharpener uses Tungsten carbide which his one of the hardest materials known. In normal use, this product will therefore give many years of service. Sharpens:scythes, grass hooks, weed knives, pruning knives, straight-edge loppers, kitchen knives and pocket knives. Garden Tools:Simply place the guard over the cutting edge and draw the sharpener across the blade. The diamond-honed tungsten carbide cutters quickly bring back a razor-sharp edge on the tool in minutesKnives:Sharpens most knives, including weed, pruning, carving and difficult blunt kitchen knives, to an extremely sharp edge. Not suitable for scalloped or serrated edges.