Best hot-end cooling fan out there! SUPERB COOOLiNG !!!
What is this good for u ask ???
1 Better flow of material inside, specially low melting temp material like PLA not to get stuck inside hot-end throat !!!
2 No under-extrusions !!!!
3 No clogging !!!
4 Better print quality!!!!!
Fan goes very tight inside ( maybe u will need to scrape some plastic whit knife off to get it inside tight, i printed it whit PETG witch is a bit flexible), add super glue just in case fan stays stuck and doesn't fall off !!
This is less noisy than original 30mm fan, on picture tested whit s9+ 15cm away from it. Much better air flow ( tornado ).