High-grade diamond particles, cutting sharper, more wear-resistant, high efficiency.Thickened base, integrated molding, no deformation, no crack, safe and easy to use. Provides clean, neat edges and surfaces.Material: metal, diamond particles.Outer diameter: 100 mm.Hole diameter: 16 mm It minimize material loss and maximize grinding assembly performance, thus maintaining your valuable tools in optimum.Used for cutting hard and brittle materials glass, ceramic, marble, metal, circuit boards, etc..syi