I BOUGHT SOME YEARS AGO AND THOUGHT THE WHOLE BOX THING WAS A TOTAL PAIN IN THE a**. Got rid of the box and never used it again! It was very restricting and in the end unnecessary. Only my experience.
I prefer the normal Mehaz (or similar) ones. Most other makes are half the price of Mehaz.
But in fact what I use are ordinary tip cutters (like everyones dad uses for their toenails). with these I can trim to any shape from square round to oval which cuts down on filing HUGELY. I hate filing. Do anything to avoid filing and buffing if I can.
Yeah, i'm in agreement with Geeg, the box things are a waste of time, I never used them. They still leave the tips too long even using the shortest guide they were still quite long.
I bought mine from the cash and carry at NSI but to be honest I don't think they are worth the money, think I paid about £27 for them. I've now gone back to using an ordinary pair of silver tip cutters as the Meehaz have gone blunt!!