The whetstones come with a multifunctional base and storage case:

• The top of the case can be used to soak the whetstone in water before sharpening. The fill line inside the case helps to guide the user.
• The base is ribbed to keep the whetstone in place during sharpening. It has space to fill it with water to wet the whetstone when it is dry.
• The underside of the base has a non-slip coating on two sides. This prevents the base from moving during sharpening.