Many things come with bolts that tighten adjustable parts like tripods and furniture legs. Here you have star knobs in which you can put an ordinary bolt in. They are metric in the sizes M6 M8 and M10 and come with a little plug to cover the hole.
Best printed in PETG with a high infill (like 80%).
Happy printing and a tight grip!
The author marked this model as their own original creation.