I bought the Alforsit. It was too small. I made it bigger. Additionally, I made it compatible with 3D printers.

Instructions: Stick the small part into the curly part. Just like a puzzle. A small amount of adhesive is advised. I did not use any adhesive; it worked without it.

The internal diameter is 20mm when closed. If you want other sizes, please contact me. I will provide them when asked. I will also add other sizes if I make them.

My honest thoughts are: IKEA made a great product, with several issues that made it unusable. I am trying to fix these. The Original attribution and idea belong to them.

IKEA, don't sue me. Please hire me?