Feature: 1. APPLICABLE MODEL: Ti alloy and copper heat insulation is compatible with for Ender 3, for Ender 3 V2, for Ender 3 Pro and for CR10 series 3D printers 2. FAST HEAT CONDUCTION: Bimetal material advantage, insulation made of ti alloy and copper. Ti alloy is used to reduce heat transfer upward from the heating block, while copper is used to speed up heat transfer. The thermal conductivity of TC4 is about I=7.955W/m·K 3. HIGH TEMPERATURE RESISTANCE: All metal thermal faults cooperate well with high temperature filaments. No PTFE wear or combustion, high temperature resistance up to 450‑500 degrees Celsius, collocation can show its performance 4. EASY INSTALLATION: This heat shield is a direct replacement for Ender 3 and for CR10 3D printers, and the bayonet design allows screws to be screwed into place for easy removal 5. 2PCS IN TOTAL: The package contain a total of 2pcs 3D printer throat nozzles, enough for you to replace and use, very convenient Specification: Item Type: 3D Printer Throat Nozzle Product Material: Ti alloy and copper Heat Resistant Temperature: 450℃-500℃ Product Size: Approx. 27.5 x 7mm / 1.08 x 0.28in M6 thread Applicable Models: For Ender 3, for Ender 3 V2, for Ender 3 Pro, for CR10 series 3D printer hot end compatibility. Package List: 2 x 3D Printer Throat Nozzle