This bushing is used to secure an acrylic rod (https://www.amazon.com/dp/B09SKYYS5X?ref=ppx_yo2ov_dt_b_product_details&th=1) into a 14mm hole with a 2 degree draft angle. The bushing is inserted with the draft angle out, therefore locking the bushing into the part. This is printed in TPU and was designed to provide a secure connection to the acrylic rod that has slight manufacturing diameter deviations.
If you like this design, think about buying me a coffee (let's be honest- it's going towards filament)- https://www.buymeacoffee.com/thehangardesigns