The SMALL is the size of 2 bearings stacked on top of each other. Remove your wheel, insert this press over the axis. Then place a bearing on top and press your wheel down. The press will evenly distribute the weight across the bearing. Flip the wheel, add another bearing, and repeat.
It has a hole through the middle so you can attach it to a key chain, rope, etc.
PLA, PETG, 20-30% infill. No supports.
The larger version can be placed on and used as a bearing pull. Reverse the order above and use the threads of the axle to grip the bearing. Tilt, wiggle, and pull out.