7mm snap on attachment clamps
thingiverse
Quick-fit snap-on clamps for 7mm rods are available, featuring screw holes that measure 3.5mm in diameter. These clamps come in various heights, allowing users to customize them using FreeCAD software. I successfully employed these clamps to attach a wooden box to a bicycle's front rack, taking advantage of their adjustable feature to accommodate uneven attachment points.
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With this file you will be able to print 7mm snap on attachment clamps with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 7mm snap on attachment clamps.