This medium-size tapered diamond slip stone is excellent for sharpening gouges, wood turning tools and more! Cone measures 3/8" to 3/4" diameter x 6" half-round and has coarse grit diamonds (325 mesh/45 micron) for a razor sharp edge. Sharpening with diamonds is fast and easy. No messy oils needed—sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service. For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT® products. Made in USA.