Quickly hone a razor-like edge with the uninterrupted diamond sharpening surface of this DMT 11.5" x 2.5" fine dia-sharp stone. This continuous diamond surface stone provides a cutting edge performance and is recognized for superior quality. Sharpening with diamonds is fast and easy. No oil is needed. You can sharpen dry or with water. Fine grit puts a keen edge on a regularly maintained edge. It is also great for water stone flattening.