If you are purchasing this item because you want micro adjustment, save your cash. This knob is threaded onto a coarse threaded rod. In my world, the word micro means 'very small'. A fine threaded rod would have been better here. In my review of the router itself I mention this as well. Replace the threaded rod with a fine threaded rod. Buy a couple of nuts to fit it and a knurled knob. Bam... in comparison this would be a micro adjustment knob. Also, if you are using any taller bits, the micro adjustment knob has to be backed of so far that it comes off the top of the threaded rod. Where is the micro adjustment in this. For those of you using this a router for your table... I can imagine that a nut attached to a small fly handle would be better...faster adjusting any way. Of course you still have the coarse threaded rod to make those super fine adjustments.