This Bosch Standard for Metal Cutting Disc reliably cuts through metal and is designed for general use with metal. It features a 22.23mm bore for standard locking nut angle grinders. Bosch cutting discs comply with the maximum safety requirements, such as EN 12413. Specifications: Abrasive Material: Aluminium Oxide, External Diameter: 125mm, Bore Size: 22.23mm, Thickness: 1mm, Operating Speed Max: 80m/s, Product Range: Bosch - Metal Cutting Discs, Country of Origin: China.