A custom designed TPU stem cap for the Arizer stems. The caps are super light weight, fit snuggly and have a much smaller footprint compared to the offical caps. In my experience, I've found the fit to be snug with no risk of being accidentally knocked off.

If you're going to be printing multiple of them, I recommend printing them in object mode to reduce the stringing that's common with TPU.

Enjoy!

Check out my other Arizer related designs

Onshape link