Stainless Steel Heat Break Throat for E3D V6 Hot Ends.
All-Metal or PFTE tube version
Material: Stainless steel
Radiating end thread: M7;
heating end thread: M6
This heat break have 5mm deep 4.1mm dia bore on the upper (cool) side for Bowden tube to lock on
as in V6.8-Heatbreak drawing from E3D. Some refer it as "Enchanced version"