A bread lame that has a more stable neck part and a very stable lock . 

The tolerances are tight on purpose so the cover does not slip of the razor and the Lock of the Razor is also mate a bit tighter so you may need to use a cutlery knife or a screwdriver to remove it when you are replacing the razor.  The Print you see on the photos was done with Creality PLA

Please feel free to post your feedback in the comments 
Happy bread baking