These handles make using the DIY headset tool from Acros a lot more enjoyable. Press the two M12 nuts into the handles and use the tool as before. The handles make working with the tool a lot quicker and more comfortable as no wrenches are needed.
The handles are also a great starting point for a fully DIY headset tool.
Use at least 4 perimeters to increse strength, especially around the area where the nut is pressed in.
The author hasn't provided the model origin yet.