This clamp for Astera-Tubes is designed for use in noncritical areas only! NEVER use it to mount Astera-Tubes over people!
For assembly you need:
1x M3 Heatset-insert
1x M3 20mm cylinderhead screw
1x M3 15mm machine screw
1x M3 Thumbscrew from @nhchiu
The author marked this model as their own original creation.