for MK8 heat block 3D printer: The nozzles used M6 thread, heat block thread hole is 6mm, same as MK8 MK7 UM2 CR10 etc. | No more burnt fingers for you! This is a must have tool for changing print nozzles. Having the right tools makes all the difference in the world! | Multi-size High-precision extruder nozzle: 0.2mm 0.3mm 0.4mm 0.5mm 0.6mm 0.8mm | Special tools:Upgrade special wrench and multi-fu
Protection fan will not breathe big foreign body! | Protecting fan blades will not be damaged by inhalation of foreign bodies! | Prevent the finger and so on to insert the fan!