The big-sized wedge is very sturdy and so it is suitable to be used et re-used virtually forever. The large lower surface of the R.L.S. wedge exerts a strong and uniform pressure on the tiles achieving the optimal leveling of them. It also guarantees the presure and leveling is maintained while adhesive getes set.
The long upper surface knurled and the not-excessive angle of slope ensure a gradual and progressive insertion in the base in order to adapt optimally to the thickness while applying still the maximum possible pressure.