❃❃ M7 thread, 1.75mm filament, Use with 2mm x 4mm PTFE tubes(Not included.).❃❃ Wear resistant high lubricity nozzle for Flashforge and others using the MK10 nozzle.❃❃ The 3D printer nozzles are made of high quality brass material, sturdy and durable.❃❃ General purpose, low cost, great for printing materials that don't have anything abrasive in them.❃❃ Diameter: input diameter: 1.75mm; output diameter: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm.Any questions, you can contact us and we will help you.