【Packaging Instructions】1PCS Ender 5 S1 Hotend +5PCS Silicone Socks+5PCS High-Speed M6 0.4mm Nozzles【Premium construction and materials for new Ender 5 S1 printer】 Low thermal conductivity; Rapid heat dissipation; Large melting chamber; High-temperature resistance; High thermal conductivity heating tube【Titanium Alloy Heatbreak】Low thermal conductivity for blocking heat creep. Able to tame up to 300℃; 2.5 times larger surface area corrugated heat sink for rapid heat dissipation with the Ender 5 S1 silent axial fan【High-temperature Resistance Copper Throat】Built-in rigid structure to resist high temperatures up to 300℃; 50mm³ large melting chamber surrounded by a large 4000mm³ heater block, fully melts the filament for smooth feeding【Widely Compatible for Filaments】 PLA, PETG, TPU, ABS, PC, ASA, HIPS, etc.