1.This is made from two components, Copper and Titanium TC4. Titanium TC4 reduces heat upward conduction at the heating position, and copper for heat dissipation to accelerate heat conduction. 2. melts filament faster , The inner wall of the titanium is very smooth so that the filament can pass through and reduce clogging. Bi-Metal Heatbreak 3.It is It has two components with different thermal conductivity. It is composed of 2 parts. We use a special process to hold them firmly together. You don't need to worry about it being . Specification:Titanium alloy bimetallic throat (smooth short): Compatible with xy X5S,Compatible with xy 2 PRO,Compatible with TEVO ,Compatible with Alfawise U20,Compatible with Lotmaxx SC-10 Colour:copper Material:Titanium alloy + copper Package Contents: 1 x bimetallic titanium alloy Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.