The smaller the size, The higher the precision of the model.The larger the size, Print faster. Vertical printing surface makes printed models with high precision Nozzle printing enables faster printing speeds. The nozzle can give the printed model a smaller layer Space and delicate texture. The larger the nozzle, the more filament will be extruded per second, and the printing speed will be lower. Nozzle specifications: 0.8mm Material: Metal colour: black Package Contents: 1 x Hotend 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.