All well and fully functional (and thanks "SpeedClic" also mounted very quickly), but again and again I notice that the metal-cutting discs (probably not only those of Dremel) wear out pretty fast. Sure, the gentlemen in the management want to make coal even after purchasing the actual grinder, but then at least the cutting discs should be cheaper - or at a given moment (high) price also comprise a higher / better durability. Have you heard that, you love Dremel marketing strategists ???