Diamond 3D Printer Extruder Reprap Hotend 3D V6 heatsink 3 IN 1 OUT Multi Color Extruder Prusa I3 kit for 1.75 0.4mm plus Nozzle and Heatsink 12V 40W Cleaning Clogged Nozzle Kit 3 pcs inputs for 1.75 mm filament 3-throat 3-heatsinks 1-.4mm nozzle 1-set of wiring + Full cleaning kit Smallest possible mixing chamber for minimal waste and fast color change Cutout for standard 40W heater cartridge, 12V 3 pcs threaded mounting holes for state of the art E3D v6 series coldend fan