20PCS 3D Printer Nozzles MK8 Nozzle 0_4mm Extruder Print Head with Storage Box for 3D Printer Makerbot Creality CR-10

3DPrinter Nozzles MK8 Nozzle 0.4mm Extruder Print Head with Storage Box. Fit forCreality CR-10,Ender3,MK8 Makerbot,Anet A8,Anycubic i3 Mega,WanhaoDuplicator,Monoprice Select Mini,Reprap,etc.   Specification Color:gold Material:brass of national standard Outputdiameter: 0.4 mm Inputdiameter: 1.75 mm Screwthread: M6 Quantity:20PCS Weight:2grams/piece   Package included 20 x 0.4mm nozzles 1 x Plasticbox    Attention Smallaccessories, please keep away from children.   How to replace nozzles ?  Step 1:Turn on 3D printer, heat the nozzle and heat block to the target temperature(PLA: 180-220, ABS: 240-280). Step 2:After heating finished, close the printer and take spanner to hold the heatblock. Then use socket screwdriver to screw old nozzle extruder out. Notice:Please don’t touch the old nozzle and heat block to avoid scalding. Step 3: Spanner keep to hold the hear block, usethe socket screwdriver screw the new nozzle in, make sure tight.