Utoolmart Diamond Grinding Disc Technical Parameters Product Name:Diamond Grinding Disc Material:Diamond Particles Outside diameter:4 inch(100mm) Thickness:1.0mm Arbor hole:16mm Mesh:150 Color:Gold Product Feature 1.Provides clean, neat edges and surfaces. 2.Diamond construction, great durability, longer service life. 3.Used for cutting hard and brittle materials such as glass, ceramic, marble, metal, circuit boards, etc. 4.Ideal for use in Glass, Marble, Rock, Stone, Granite, Tile, Fiberglass and other materials. 5.It minimize material loss and maximize grinding assembly performance, thus maintaining your valuable tools in optimum. Package Content 1 × Diamond Grinding Disc