These bed screw locks help ensure the bed screws stay in position. Each notch translated to 2 minutes of movement, which is useful for dialing in the manual bed leveling with Klipper's Screw Tilt Adjust.
Elegoo has developed an alternative “Heated Bed Bracket” for the Neptune 4 Pro. This bracket is thicker and includes cutouts. As a result this model is not compatible with this other bracket. Make sure your bracket is solid steel as shown in the photo.
The user re-uploaded this model. The user is not the original author of the model.