NOT USED ON HE280 OR EZR STRUDERS
These fittings are used with our bowden hotend and some of our early (2011-2012) 3D printers for attaching 4mm outside diameter Bowden tube between the extruder and the hotend.  
- M5 mm threaded
 
- fits 4mm OD PTFE tubing
 
- for 1.75mm size filaments
 
- Sold individually