https://alexnld.com/product/mk10-0-4mm-m7-threaded-brass-nozzle-for-1-75mm-filament-3d-printer-part/?hilite="Creality 3D CR-100 Full Assembled 3D Printer Red/Blue 100*100*80mm Printing Size 1.75mm 0.4mm Nozzle Support Off-line Printing"