Throat , E3D V6 heatbreak Bimetal Titanium alloy brass heatbreak for 3D printer hotend throat, E3D Titanium copper throat / TC4 Titanium alloy V6 for E3D V6 volcano hotend, E3D v6 heat break hotend throat with teflon tube for 1.75mm filament for 3d printer machine. 3d printer stainless steel alloyTeflon throats for 1.75mm Filament 3D printer and also used for high temperature heating block. This tube is made from stainless steel and plated with TwinClad XT coating. TwinClad XT is a very low friction Electroless Nickel composite coating, often used in injection molding because of its release properties. This high lubricity plating will prevent clogging in the critical zone of hotend, where filament liquidizes. It is also very hard and corrosion resistant. Great for high abrasion filaments like Carbon Fiber, Metal filled, Aluminates, etc. This part will eliminate PTFE liner and give you good, long-lasting performance with PLA.