Batarang

Update v1.1 : Updated Center cap to increase tolerance a bit
Update v1.2 : Filleted the centers for a cleaner look
My first design to be 3d printed, feedback would great.

Print 1x of each center cap
Print 2x wings

The large rectangle on the bottom cap can be glued to the hole in the bottom cap. I have left a 0.2mm space between the axles and the corresponding holes hopefully that is enough for 3d printing. there is also a 5mm recess in the edge of the wing to accommodate a magnet disk to allow the wings to snap together, although in the design the wings do not touch so I'm not to sure if the attraction will be enough, if not I can edit the design to get closer tolerances.