This is my fourth router (and the best ever).  It is primarily used in a router table and was selected for stability and ease of non-stick plunging.  I have altered the adjustment knob to facilitate adjustment by replacing it with a shop made crank which greatly enhances cutter adjustment.  Otherwise, the machine is relatively large for certain small types of hand work. I have it mounted in 1/4" phenolic using 3 flat head Phillips metric screws: 6MMx1.0, cut from 30MM down to about 17MM or 11/16".  Almost any hardware store has metric screws.  The unit is smooth in both starting and plunge cutting. If the collet is not properly seated in its tightening nut, it may SEEM to be too small.  It is, however, quite precisely 1/2" (and for those that like metric it's 12.7MM)  All bits and the supplied 1/4" adapter fit perfectly.  It's the best deal going.