Adjustable Laser Tube Holder

I made this in ABS while upgrading a 50W laser cutter and was looking for an adjustable tube holder to replace the existing, very difficult to adjust, ones. Additional hardware that I used includes:
- 4x 4-40 nut
- 2x 2" 4-40 fully threaded screws
- 2x 1/2" M3 flathead screw (similarly sized wood screw will also work)

A poorly framed time-lapse video of how to assemble this tube holder can be found here (starting at 7:40): https://youtu.be/0unmU4iKKFA