This cnc router holder is an ideal way to attach your router ( 65mm in diameter like for instance the makita RT0700 or similar ) to your cnc machine.The dimensions of the holes are made to be compatible with 20mm aluminium extrusion. It can easily be printed on a regular desktop 3d printer using common filaments like ABS or PLA. A small M3 screw and nut are required to tighten everything up. On my account you can also find a vacuum attachement you can add underneath this piece to reduce the amount of dust generated by your cnc machine.