When searching for a quality extra coarse stone we found this great option under Abrasive & Finishing Products in the Industrial and Scientific category.Using this product, our team found that the finish on our project was greatly improved, and the stone was able to remove excessive material with ease. The coarse grit is perfect for sharpening tools or removing deep scratches from metal surfaces. The only downside we found was that the stone tends to wear down relatively quickly, requiring frequent replacements. Overall, this is a valuable addition to any finishing toolkit..