Thule Tool (Knob to Hex bit adapter)

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3535598.

I was tired to twisting the knobs on my Thule, when I put it on and take it off each week for skiing. So I designed this adapter that lets me use an electric screw driver and standard hex screw driver bit to turn the knobs quickly. I have no idea if all Thule knobs are the same but someone might find it useful.