Check the listing for details. 2pcs Diamond Sharpening Stone Set 1200 Grit for Scissors Kitchen Tools. Condition: New. Listed at 15.33 USD. 1. Material: The sharpening stones are made of diamond, a highly durable and hard material known for its efficient sharpening capabilities. The diamond abrasive ensures precise sharpening of blades and cutting tools.2. Instructions: For best results, maintain an angle of around 30 degrees while sharpening, though the specific angle may vary depending on the blade and sharpening needs. Apply moderate pressure and move the knife or tool back and forth across the stone, maintaining a consistent angle. Alternate sides regularly for even sharpening.3. Features: Each set includes 2pcs of whetstones with sharpening stones, the compact size of the sharpening stones makes them easy to carry and store. They can be easily placed in a toolbox, kitchen drawer, or carried in a bag for on-the-go sharpening needs.4.