Compatible Models: This hotend kit is compatible with for 3, 3 Combo 3d printers. High Temperature Resistance: The throat tube is made of chromium zirconium copper wrapped aluminum alloy. The nozzle is made of hardened steeel , which can withstand high temperatures up to 550 and supports a maximum printing speed of 600mm/S. Widely Compatibility: This hotend is widely compatible with various filaments, such as 1.75mm PLA, ABS, PETG, TPU. Quick Swap Nozzle Kit: This hotend adopts a quick-release structure. Tools free to swap the full-metal hotend, Just plug and unplug the tube clamps to complete the removal and installation of the hotend. Package: 2x Hotend, 5x extra 0.4mm brass nozzles. Please check whether the heating rod and thermistor are tightened before installation to avoid printing problems. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:Silicone Package Contents: 2x Hotend 5x extra 0.4mm brass nozzles 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.