Specification:Material: Stainless SteelMandrel diameter: 3.17mmBlade Diameter:32mmMaximum RPM: 20,000Made from strong stainless steel, durable and firm.Ideal for cutting hard materials like wood, plastics, laminates and aluminium, etc.Suitable for use in carpentry and crafts.Package Included:5 X Metal Cutting Disc1 X Mandrel