Features:
M6 screw part is made of high quality stainless steel, and long service life. There is a PTFE tube inside which ensures fluent passing through of filament. Comes total 5 pieces in one pack and you may use them for quite a long time. Widely used and fit for any 3D printer extruder that uses 1.75mm filament. Great parts to built a 3D printer or used as a replacement for old or broken part.

Specifications:
Material: Stainless steel, PTFE
Size: M6*40mm, M6*50mm(Optional)
Thread OD: 6mm
Thread ID: 4mm(one end), 2mm(the other end)
PTFE Tube Length: 20mm
PTFE Tube OD: 4mm
PTFE Tube ID: 2mm
Suitable For: 1.75mm filament
Quantity: 5pcs

Package Includes:
5pcs x Nozzle Throats