These are mounts for a Mellow Fly ADXL345 accelerometer for an Elegoo Neptune 4 (Pro) 3D printer.
Compared to other mounts that attach to the back of the extruder they work for the non-Pro and Pro model.
I've designed them to use a total of 4 M3x6 threaded inserts for reuseability.
Additionally you'll need 2 M3x6 bolts with nuts to mount the Y-Axis Mount to the bed and 2 * M3x18 bolts to mount the X-Axis Mount “behind” the extruder stepper motor.
They are designed with the goal to be as resistent as possible to the vibrations that are supposed to be measured with the sensor.