Features:Double sandblasting edge design (5 mm block segment), more smooth chip removal, cutting more sharp, longer life.Vibration-free designs greatly reduce operator fatigue, more productive than conventional abrasives.For dry grinding and wet grinding.Applicable models: polishing machine, angle grinder etc.Cutting objects: stone grinding, asphalt grinding, ceramic grinding and so on.High hardness and good toughness, durable in use.Specifications:Base material: A3 Steel PlateBlade material: copper iron tin manganese nickel, diamond particlesColor: gold(115mm), silver(125 mm), yellow(180 mm)Inner Diameter: 20mm/0.79 inchThickness: 5mm/0.2 inchInner row width: 7mm/0.28inchOuter row width: 8mm/0.31inchWeight: 365g(115mm), 430g(125 mm), 770g(180 mm)Package Included:1 x Diamond grinding disc.