1APPLICABLE 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 2FAST 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/mK 3HIGH TEMPERATURE RESISTANCE: All metal thermal faults cooperate well with high temperature filaments. No PTFE wear or combustion, high temperature resistance up to 450500 degrees Celsius, collocation can show its performance 4EASY 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 52PCS IN TOTAL: The package contain a total of 2pcs 3D printer throat nozzles, enough for you to replace and use, very convenient2 x 3D Printer Throat NozzleItem Type: 3D Printer Throat NozzleProduct Material: Ti alloy and copperHeat Resistant Temperature: 450-500Product Size: Approx. 27.5 x 7mm / 1.08 x 0.28in M6 threadApplicable Models: For Ender 3, for Ender 3 V2, for Ender 3 Pro, for CR10 series 3D printer hot end compatibility