Instructions: Soap 15 mins in the water before use ?Silicone base for holding the stone inside non slip bamboo base, ensure the stone is fixed in one place while sharpening. ?Bamboo base contains anti-slip bottom can make you stable sharpening knife. ?Knife sharpening angle guide allows you to maintain correct angle and safely apply consistent pressure while sharpening the blade. ?Fixer stone, used for repairing whetstone, keeping whetstone surface smooth