Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Plug and Play: Remove the old exturder and install the new hot end to start. 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. 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! Colour:black Material:aluminum Package Contents: 1 x V6 Hotend Sets 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.