1、COMPATIBLE MODELS: Compatible with all 1.75mm for v6 3d printers. for CR 10 cr10s, for ENDER 3 v2, for ENDER 3 pro , for ender 5, for ENDER 5 pro. 2、550°C TEMPERATURE RATING: All metal hotend has a surfaces nickel coating and is rated at 550°C. Compatible with all filaments from basic plastic to custom medcine kits. 3、HEAT DISSIPATION: Copper heat sink, two section connection, reduce the seam, increase the size of copper heat sink, heat dissipation increased by 20% to 30%, RA0.3 bore roughness, so that the filament movement more smoothly, to prevent the hot end blockage caused by thermal creep. 4、RIGID FRAME STRUCTURE: Screw slot design to fix the thermal break, rigid overall frame structure to protect the thermal break from external force. 5、EASY TO INSTALL: 0.4mm standard nozzle, non stick, accuracy manufactured to ensure smoothly nozzle without burrs, easy to install.