1. This Kit is Upgraded, the heating block upgraded to chromium-zirconium nickel plating treatment, high temperature resistance 500C degree printing, fast heat conduction.2. The radiator and heat break can be disassembled and locked by the side fixed shaft to reduce the use cost.3. The interference of the TC4 titanium heatbreak tube and the heat block increases at the bottom of the throat to completely eliminate the phenomenon of falling off and reduces the possibility of leakage.4. The nozzle is connected by thread, and in contact with the bottom step of the heatbreak to completely solve the phenomenon of falling off and reduce the possibility of leakage.Nozzle:hardened steelHeating block:zirconiumRadiator:aluminum alloyThermal sensitivity:NTC100,-30 to 300 Ceramic heating plate:heating temperature up to 300 Voltage:24VDue to different batches, the appearance, color, and printed words of the product , which does not affect its use.Colour:Black & SilverMaterial:MetalPackage Contents:1 * Upgrade Hotend Kit with Heating RodOnly 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.