4Pcs nozzle throat tubes, no PTFE tube inside.
M6 thread, 26mm long, for V6 1.75mm Extruder hot end.
Made of stainless steel, corrosion resistant and wear resistant.
Effectively prevents heat transfer, avoids material swelling and clogging when the printer is working.
Compatible with 1.75mm CR-10 Ender 3 V6 Makerbot 3D printer .