Gator 4 In. Combination Stone is designed for sharpening tools with ease and efficiency. This versatile stone features a coarse grit on one side and a fine finishing grit on the other, allowing you to achieve a sharp edge and a smooth finish in one convenient tool. Made from industrial quality silicon carbide, it ensures durability and effective sharpening performance. You can use it dry or with water or oil as lubricants to get finer edges. This combination stone is for maintaining your tools and keeping them in top condition. Model Number: 6063