The Jende 1"x6" Spyderco Sharpening Stone Ultra Fine is a high-quality sharpening stone designed for precision and fine tuning of blades. Made of white stone material, this ultra fine sharpening stone from Jende is perfect for achieving a very sharp edge on knives and other cutting tools. The compact size of 1"x6" makes it easy to handle and store in the kitchen, while the model UF indicates its ultra fine grit for extremely sharp results. Ideal for both professional chefs and home cooks looking to maintain their knives in top condition. Brand new sealed