5PCS ALUNAR M6 X 30 Throat Tube for MK8 Makerbot 3D Printer Extruder For 1.75mm 3D Printer

Barrel for both single and dual MK8 extruder with a PTFE tube inside.
Please note that the 1.75mm MK8 extruder is not compatible with the 3mm
Application:

Barrel M6 X 30 Teflon
Nozzle Throat for MK8 Tube Makerbot Reprap Prusa 3D Printer Extruder Hot End
Specification:

Material: Stainless Steel
Screw thread: M6
Length: 38mm
Inner diameter: 2mm for 1.75mm filament
Note:

Light shooting and different display may cause the color of the item in the picture a little different from the real thing.
The measurement allowed error is 1-3cm