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In the same series as my M5 and M6 but smaller :-)
For hinged extruder and other narrow speces check the small version here: http://www.thingiverse.com/thing:108662
Butterfly nut for M4 by ffleurey is licensed under the Creative Commons - Attribution license.
So what's this mean?
We're sure ffleurey would love to see what you've printed - take a photo and share it on Thingiverse as a Make.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. You can also download the Thingiverse Mobile app (available via Google Play and Apple App Store) to take a photo and upload your Make right from the app!