HICTOP 3 Pcs 3D Printer Extruder 0.4mm Brass Nozzle + 3 Pcs Extruder 1.75mm Tube for Reprap Prusa I3 Brand : HICTOP Application : Reprap Prusa I3 3D Printer (Extrude) Brass nozzle size:13mm*6mm Tube Inner Diameter : 2mm / Length : 26mm Material : Stainless Steel, Brass