"This sharpening stone is suitable for most sharpening operations, such as tool steel, scissors, axes, kitchen knives, outdoor knives, cutting knives, grinding, folding knives etc. This whetstone can also be used for grinding scissors, chisel, axe, razor and other tools. Double-sided sharpening stone, one surface of 3000 is coarse grit and another surface of 8000 is fine grit. High quality corundum materials with uniform grain size, strong grinding force, corrosion and heat resistant, durable and long lasting. Non-slip silicone pad, it has good slip resistance. Hollow-out construction can circulate water freely. 60 Day Money Back Guarantee & Lifetime Hassle Free Warranty! 2 in 1 Sharpening stone for sharpening and polishing knives with silicone non-slip backing, 3000/8000 Features: - Materials: corundum - Dimension: 180 x 60 x 30 mm - Net weight: 622.4g - Weight with base: 684 g The instruction 1. Immerse the whetstone in water for about 5 minutes. 2. The sharpening of knives with stage 1 or stages 2, is determined by the degree of blunt tool. Step 1: 3000 grit coarse is used to repair very edge blunt and for dull knives. Hold the knife at a 10-30 degree angle and hone the edge on the surface of the stone with gentle pressure until the edge becomes sharp. Step 2: 8000 grains of curing is a necessary step to remove burrs on the edge. Hold the knife at an angle of 10-30 degrees and sharpen it on the surface of the stone with more gentle pressure, grind it until there is a smooth, fine edge. Generally use 8000 grit once a week to keep your knives sharp. 3. After sharpening the knife, clean the knife with a damp cloth or water, then dry it with a clean towel. Clean the surface of the stone with a brush soft and put the stone in a ventilated place to dry completely before storing. This double sided sharpening stone is sturdy with a non-slip base for safety. The package includes: - 1 x Stone to sharpen 3000/8000; - 1 x non-slip base.