Please note that there is a slight color difference or discrepancy in kind, it does not affect the use, please do not mind, thank you! Notice: This hotend kit is only compatible with Neptune 4 3D printer. Plug and Play: Remove the old sprite exturder and install the hot end to start. (3D accessories are pre-installed) Nozzle and hot block: The seamless connection between the nozzle and heat breakage accelerates the nozzle to dissipate heat, and the heat breakage to insulate, and releases the nozzle blockage. Colour:Photo Color Material:Aluminum + Brass Size:0.4mm Package Contents: 2 set x hot end Kit 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.