FERM is the store brand of the dutch store chain Action. They just started selling this screw driver where I live for 12€; I did not expect much, I just wanted to have something stronger when the Wowstick is too weak and the Makita is too bulky. I have a love-hate relationship with it already, because I already damaged two threads because the torque of this thing is definitely stronger than you'd expect from a 4V device. Also the lowest torque setting seems a lot higher than my Makita drill, the FERM really isn't the device for fine-mechanics.

The hooks just press-fit into the holder, that way it's more stable and doesn't need support.