These mounting hubs are awesome for mounting to practically anything to gain a strong connection (4 M5 Screws) to a set screw locking shaft hub.
Since the spacing between the holes are at 20mm (standard spacing for V-Slot tracks) this opens a whole new level of mounting that will allow for configurations like never before!
Check the pictures (there are lot's of them) to see a few examples and download the model to see how you can incorporate this unique locking hub in your next build.
Aluminum Black Anodized
L-21 x W-21x H-6
4 Tapped M5 Mounting Holes
2 M5 Set Screws (included)