Maintenance KitDESCRIPTION The perfect thing for keeping you Opinel knives in great condition, this maintenance kit contains a range of useful accessories to keep your knives looking and working their best. This kit includes a protective wax, a sharpening stone, and a universal stone to allow you to adjust the blade's angle easily and maintain optimal sharpening results. The durable metal storage box contains: Whetstone from the Pyrenees for sharpening the blades