TAIDEA 3000/8000 Grit Combination Corundum Whetstone Knife Sharpening Stone / Double Two-Sided Knife Waterstone Sharpener T0914W Premium grade corundum ensures effective sharpening results Double sided sharpening 7" x 2.4" x 1.1" (180mm x 60mm x 27mm) The stone easily stores away in a cabinet or kitchen drawer when not in use Manufactured in China