PREMIUM range of 9" (230mm) metal cutting discs to fit all standard angle grinders. They can be used up to a speed of 6,650RPM. Each disc has a bore of 22.2mm and a thickness of 2mm. The 2mm thick blade cuts quickly and accurately, producing a clean cut with less waste than a standard disc. Their premium construction offers an exceptional life span, making them great value. Long life, fast cutting discs. Conforms to British Standard EN12413, do not buy discs unless they conform to this standard.