Designed for use with the Edge Pro Knife Sharpener</br></br>Product Description</br></br>1000 Grit Ultra-Fine aluminum oxide water stone, mounted on an aluminum stone blank. The finest stone used as the last step before going to Polish. This stone is a little finer than a Japanese 8000 grit water stone.</br><br/>http://www.amazon.com/gp/product/B00CIUUDRU