Adjustable Super Clamp with Attachment Screws
Free     Thingiverse     ris8_allo_zen0

Adjustable Super Clamp with Attachment Screws

I found really useful to mount things on the handrail of my balcony so I edited it to add holes and nut pockets so I could add a few M4 screws and attach pretty much anything to it ...

similar models —

Adjustable Super Clamp with Attachment Screws alternatives
Adjustable Super Clamp
247generator