"GT2 Belt Wedge" Tensioner

Addon to this thing:
http://www.thingiverse.com/thing:275874

Nutless version can be found here:
http://www.thingiverse.com/thing:652361

I couldn't find the tensioner shown in his pictures, so I made one.

Uses:
2, M3 20mm bolts(or 16mm).
2, M3 Hex Nuts.

Designed to work with:
http://www.thingiverse.com/thing:377357

And(not required but recommended):
http://www.thingiverse.com/thing:651397