Feature: 3D printer parts for 3 in 1 outdoor assembly multi color three colors switching remote extruder Hotend kit for 0.4mm 1.75mm Color switching is fast and stable, without significant print quality flaws. Firmware modification is simple and easy to use. Users can easily get 3 or 2 colors printing printing. It can also be used as a single-nozzle hotend set. Specification: Material: Aluminum Nozzle diameter: 0.4mm in default if you want a different nozzle size, pls inform me Fiber: 1.75mm PLA / ABS Feeding mode: remote feeding Extruder adaptation: Titan, bulldog and other remote extruders bulldog extruders recommended Dimensions: main heat sink block 60 x 27 x 27mm Heating voltage: 12 V / 24 V Waiting distance for color switching: 45mm Erase tower capacity: 55mm Package List: 1 set x Hotend Kit for NF THC-01