1、Bimetallic Heat Insulator: This metal throat uses a bimetallic heat insulator with different thermal conductivity, titanium alloy to reduce upward heat transfer in the heated position and copper for heat dissipation to accelerate heat transfer. 2、All Metal Insulation: This metal throat is fully insulated with metal insulation, works well with high temperature filament, without PTFE abrasion or burning, with high temperature resistance up to 420℃. 3、Excellent Performance: This metal throat is processed by accurate 5 axes machine tools and made by accurate stamping mechanism, with bore finish of 0.3 and torsion of more than 10kg. 4、Sturdy And Wear Resistant: This metal throat is sturdy and wear resistant, not easy to be damaged, and has a long service life with high temperature resistance. 5、Threaded Design: This metal throat features a threaded design, which is very easy and quick to install, you just need to screw it into the corresponding place.