For a craftsman who has to do every day with angle grinders and discs replaced, there is probably nothing more practical than this quick release. Uncomplicated to use, quite durable when the outer ring of the water pump or not Pipe wrench opens, because it is cured and stops at too high a pressure. Also described in the manual that this may cause "death" of the quick nut for. Should they have nevertheless tightened times by wedging the disc, it is advised it with a wrench to open, which actually exist any Flex enclosed recesses therefor. Personally, I had the case that dust and other wear and between the moving parts of the upper and lower plate of the mother was. Remedy I found soaking in gasoline or oil (after, of course, make a difference and dry well again or clean) Every now and then a drop of oil is not wrong anyway. All in all a solid piece that an easier to use. From me a clear recommendation.
