Use the slices on a Bosch machine. Even when stickable you realize the difference. The Bosch hold bombproof, these become independent after Kruzer time. What is sub-optimal, if you always have to climb the ladder to search the disc. Did this used to grind walls, is indeed zweckentfrmedet that Bosch, however, have kept still, they do not. Lieber on original Bosch (or equivalent manufacturer recourse) and not resent grinding wheels with life of its own. The grinding performance ansich would not be so bad, but I compare it with a car tire: The best tire is useless if it slips off the rim!