This is a simple tool to tighten or loosen the lock ring for the brake adapters on a Nuvinvi/Enviolo 380 Drivetrain/Hub. Its an alternative for the commercially available (quite expensive) toolhead, although understandably it cant provide torque accurate tightening due to its handy character.
Besides the printed part (I did 80% 4 perimeters, Polymaker PLA) you need 8xM3 screws, mine are 20mm long. You can use shorter ones.
The author marked this model as their own original creation.