General description Neilsen 20pc Metal Cutting Discs are ultra-thin, high-performance blades designed specifically for cutting metal. With a diameter of 115mm (4.5 inches), these discs are ideal for precision cutting tasks. Technical specifications Diameter: 115mm (4.5 inches) Thickness: 1.6mm Bore: 22.2mm Maximum RPM: 13300 Cutting speed: 80 m/s