* This combination whetstone has a J1000 grit side to restore the edge of your blade, and a J3000 grit side to smooth and finish that edge. Soak the stone in water before using, and hold your knife at the correct angle while sharpening. Includes a rubber tray for stability. * Combination whetstone has J1000/J3000 grit sides to sharpen and finish * Includes rubber tray for stability