Ewigkeit PC4-M6 Pneumatic Fitting Push to Connect + PC4-M10 Straight Quick in Fitting for 3D Printer Bowden Extruder (Pack of 20pcs)

This are the ones! These are a direct replacement for the extruder and hot end on an ender 5 pro! Work amazing, fixed all my issues with stringing and retraction issues! Grips the bowden tube great and the quality of the fittings are top notch. Highly recommend

Nozzles work great as a direct replacement on my Prusa printer. Had no problem changing out the existing one that got damaged from a stupid mistake. After recalibrating for the new size, I was up and printing. Seems to hold up so far pretty well with both PLA and PETG.