The 2 parts of the "X" are linked together. There is only one way to solve this wooden puzzle. In this video, I will reveal the secret, show you what's inside and also sown you how you can build one of these for yourself.

Link to Bearings:
https://www.amazon.com/dp/B07HJDXYWD/...
The bearings I used are actually 3/8" diameter. In the video, I said 5/16 but either one should work.