Fully 3D-printable Beyblade Face-bolt from the metal-saga series.
It's compatible with all of the stock-beyblade parts and fits into the bey-wrench perfectly. I recommend printing it horizontally because every time it tried printing it vertically it broke or split in half. But it's up to you. Apart from that, it's ready to use as soon as you print it.
I'm planning on publishing other parts such as the metal/energy-wheel, spin-track, performance-tip, etc. More to come, so keep your heads up....