The accessory kit comes with 2 x nozzle extruders + 2 x heater blocks + 2 x throat tubes, enough for use.; Used as replaent print head, easy to assemble, reliable accessory for 3D printer DIY rs.; Universal design, suitable for various 3D printers, such as A8/ A6/ Ender 3, etc.; External thread diameterof extruder throat is 6mm, input diameter of nozzle and extruder throat is 1.75mm, great compatibility.; Made of premium metal material, compact workmanship, great for use and durable.

What's in the box
2 x 3D Printer Accessories