A combination sharpening stone made from Aluminium Oxide. Ideal for sharpening your leadknife as it becomes blunt. You can use this sharpening stone with many stained glass tools, staight or pro (curved) lead knives, pallette knives, and oyster knives.
Tip: Use with a little oil and make figure 8 motions on both sides of the blade. Please note, product may vary slightly to the item pictured.