V-Spooler stronger drill attachment

The hex hole in the drill attachment of the V-Spooler is bigger than the shank of a normal hex bit. If you, like me, don't know that, that hole will become round very fast. 

This is something to be glued over and into the drill attachment which gives more grip.

Print advice

I recommend to print this lengthwise, horizontal, so the layer lines are as strong as possible. You'll need supports, but I think the greater strength is worth the hassle of removing the supports.