About this 3D model

1) Uses a 29mm diameter fan 2) Uses two 21700 power batteries 3) Uses m1.6*6 screws 4) The ESC can be chosen based on your needs, with one-button start or speed control 5) The charging board should preferably be equipped with a BM balancing function 6) The file also contains a version without holes, feel free to download and modify it if needed