![Printrbot Simple [2014] Ninjaflex Helper 3D model preview](https://resize.thingiverse.com/?url=https://cdn.thingiverse.com/renders/e4/a0/6d/a8/ee/guide-hero1.jpg&w=1024&h=1024&fit=contain&cbg=white&n=-1)
About this 3D model
***UPDATE: We recommend using the Gear Head Extruder upgrade from Printrbot to print Ninjaflex*** http://printrbot.com/shop/gear-head-extruder/ ***This part is out of date and no longer supported*** ***This part was designed for the early 2014 models of the Printrbot Simple Metal***