For surface and edge grinding and for welding in demanding applications on different steel grades 4 mm thickness for peripheral grinding 7 mm thickness for rough grinding 8 mm and 10 mm thickness for rough grinding with enhanced lifetime Best results when used on powerful angle grinders High-performance rough grinding wheel with LONGLIFE technology for maximum lifetime Combination of zirconia alumina and innovative bond system offers unprecedented abrasiveness Comfort Start ensures a comfortable start when grinding and increases the level of working comfort For surface and edge grinding and for welding in demanding applications on different steel grades 4 mm thickness for peripheral grinding 7 mm thickness for rough grinding 8 mm and 10 mm thickness for rough grinding with enhanced lifetime Best results when used on powerful angle grinders High-performance rough grinding wheel with LONGLIFE technology for maximum lifetime Combination of zirconia alumina and innovative bond system offers unprecedented abrasiveness Comfort Start ensures a comfortable start when grinding and increases the level of working comfort