Please note - this guard is made for models produced (not purchased) after 2020 when they were redesigned. The production date can be found on the side of the box. These models have a dial that adjusts from 0.5mm-20mm. They will not fit on the older dial models that adjust from 1mm-20mm.
If your model doesn't have a dial this guard will not be compatible. Those older models without a dial use a guard with a gray button to push and adjust. This guard needs a dial to adjust.
Compatible with handle types 5800, 5802, 5804, 5806, 5808. Check your handle type number on the back of your trimmer.