For aggressive grinding applications such as bevelling, removal of residues, welding grinding and edge processing on a wide range of metals, use depressed core disc 3MTM Silver. This disc contains the Precision Shaped Grain granule, which fractures continuously forming sharp spikes and edges, which accurately affects the metal, rather than affecting it or digging it like traditional abrasives. This contributes to a significantly greater duration than traditional ceramic granule abrasives while maintaining a great cutting speed throughout the product life cycle. Use with tools and accessories designed for depressed discs in the centre. For safety reasons, always use on an approved protection instrument, according to DIN EN 12413 standard for rigid abrasives.