Features:Brand new and high qualityThis Kit is Upgraded, the heating block upgraded to chromium-zirconium nickel plating treatments, high temperature resistance 500degree printing, heat conduction.The radiators and heat break can be disassembled and locked by the side fixed-shaft to reduce the use cost.The interference of the TC4-titanium heatbreak tube and the heat block increases the step surfaces at the bottom of the throat to completely eliminate the phenomenon of falling off and reduces the possibility of leakage.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.The nozzles had been updated which can not fit for original hotend and it will not work with 3rd party nozzles. The removable nozzle can be replaced easily. Specifications:Material:MetalColor:Black Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1 Set Upgraded Hotend