The curved and conical design of this Japanese Whetstone is perfect for sharpening curved bonsai tools including Spherical Branch Cutters, Knob Cutters and Carving tools. A Cone Gouge Slip Stone like this is traditionally used for curved chisels and gouge tools. The flat edges on the Sharpening Stone are also great for sharpening all other flat edge tools such as Bonsai Scissors, Branch Cutters, Trunk Splitters and everything else in your kit. This Curved Hand tool sharpener by Suehiro is manufactured in Japan and is one of the leading brands in High Quality Japanese Waterstones. #1000 grit is great for all round sharpening for even some of the bluntest tool and fine enough that you should be able to take the hairs off your arm once your done. Always use this sharpening stone with water.