This includes two models. One is a replica of the Gameboy Advanced SP D-Pad, and should function as a drop-in replacement. The second model is identical to the first, but the D-Pad is extended by 1.5mm out of the gameboy shell.
This was made as I printed this replacement gameboy advanced sp shell, which worked wonderfully, but the D-pad was bit too recessed and having more wobble than I would like. The 1.5mm extended model is what is shown in the cover photo.
The author hasn't provided the model origin yet.