These are fun keychains!  To enjoy these fully they must be printed in TPU.  Make sure your TPU is dried out before printing.  These keychains are fun being a fish like bones but flexible with the TPU.  They are great for sensory.  You can twist and flex them around.  Even great to squeeze them in your hand.  

If you get a bit of stringing during printing just hit them with a heat gun or torch to clean up the stringing.   I personally have one of each of these on my keychain.  I really like both the standard fish and my halibut style fish.  

Hopefully you will enjoy these as much as lots of other people have.

Make sure to select the printer profile that will work for you.  I have A1 profiles and P1 and X1 profiles.  The P1 and X1 profiles will work for the H2D also.  Have fun and enjoy your flexi fish/halibut fish.