content: I like this product when using my Bosch combo kit on my router table. This base allows me to adjust the router bit height from above the router table by using the included Hex Key. In additon, I can leave this base permanently attached to the router table. I simply pull the motor out of the base that's attached to the router table and then stick it into one of the other router bases when I want to use the router freehand. Very convenient.