Made this for a friend's balcony handrail. Fits the original mounting adapter surprisingly well.

Required hardware:

• 2x - 4x M3 countersink screws
• 2x zipties (optional)
• 2x - 4x M3 threaded inserts (optional)

Best printed out of PETG. I recommend using perimeters to completely fill the sides of the mount, and 100% infill. No special settings required for the peg.

Use the “self-tap” file if you don't have threaded inserts and intend to tap the plastic or screw directly into it.