it's the magnetic QuadLock mount with wireless charging. i have the locking one in the jeep to keep things from falling out. but they are SUPER nice to just slap it up there, it's clocked and won't slide, plus charging.
https://www.quadlockcase.com/collect...42042648887467
as for the 3D print ... just the same ball size on a base that fit the dash hole, one screw thru the middle and a washer trimmed for the cord hole on the back. i've made these ball mounts before and the thin post can be a weak point, running the screw up into the ball makes them super solid.
