DMT COO Crystal Saver Multi-Purpose Diamond Sharpener Dimensions: 3.4' 10.3' 1.0' Material Synthetic Brand Diamond Machining Technology Color Blue Item Dimensions LxWxH 11 x 6 x 4.25 inches Grit Type Coarse Easily smoothes chipped edges of crystal, china, ceramic, glassware or any hard material No messy oils needed--use dry or with water Half-round 4-inch coarse diamond file good for all-purpose filing needs Durable construction will provide years of consistent performance and reliable service Diamond Machining Technology Crystal Saver for fast and easy edge repair