The new design of the Slim Pro Coffee Mill features a ceramic grinder burr, and a reinforced hexagonal crank handle.
When using the the previous Slim Plus, the grind size had to be adjusted from the top of the grinder, after taking off the handle and the stopper.
Using the Slim Pro, the grind size is adjusted from the bottom of the burr set. To adjust, simply unscrew the glass container from the bottom. On the bottom of the burr set, turn the knob left or right to adjust, holding crank handle to keep the burrs stable.