KinpsTaidea 1000 Grit 7-Inch Professional Single Corundum Whetstone Knife Sharpening Stone 1000 Grit is suitable for fine sharpening. High-grade corundum ensure effective sharpening results Equipped with silica gel non-slip base guarantee the safety sharpening. Usually used in a variety of knives and tools including kitchen knife, pocket knife, woodworking too Cannot be used for ceramic knife, scissors and serrated knife.