handle for parkside grinder

anybody with the same grinder will relate, those knobs are SO annoying. you're not able to tighten them cause they've got no grip at all. I used to use  adjustable pliers but that also was quite annoying. so I designed this, a key to actually tighten those knobs. I made a fully printed version and one that uses an 6 mm allen key. 

if other Parkside tools use the same knobs it also could be very useful for those. 

print both models upside down.