PoPprint PC4-M6 Straight Fitting 4mm thread M6 Connector for 3D Printer (Pack of 10 pcs)

Fitted the threads on the dual-hoobed gear extruder I got on ebay for my CR-10sThe extruder was not printer specific, and this fits my dual hobbed and stock extruder so it will likely fit any that have threads onWhile the metal thread does fit into what I wantThe PTFE does not go through the coupler, only 1.75 filament does.I have some black PTFE couplers (same as this) that DO let PTFE pass entirely through but I am yet to find any couplers that do that

Good item

Perfect

These work much better (and are clearly built better) than the ones that came with my CR-10 3d printer. No complaints.

This makes you realise how poor the stock fitting are, these are a vast improvement.

Replaced Ender 3 stock fitting, not had any problems, works as it should

Much better then stock & the ones I got with my Capricorn tube. Good value.

.I am extremely happy with my product