40 Pieces 3D Printer Nozzle Cleaning Kit, 28 Pieces 0.15 mm, 0.25 mm, 0.35 mm, 0.4 mm, 0.5 mm Nozzle Cleaner with Storage Box, 8 Pieces Cleaning Copper Wire Toothbrushes, 2 Pieces Tweezers

BEWARE: The brass brushes are not brass, they are just steel colored to look like brass. They are magnetic, which real brass should not be.

I didnt buy this product to clean printer heads. I bought it to clean gas furnace pilot light orifices. This is the only product I found that has wire gauges small enough to clean gas furnace pilot light orifices. Sizes for natural gas pilot orifices run from .014 to .026 and for LP from .006 to .013.

Best value for number of pieces.

Pros: I received all items it the picture including the tubes. Cons: Tweezers are damaged at the ends. All cleaning needles smaller than 0.4mm are in the same tube with no marking to distinguish the difference. I will not be able to tell the 0.5 and 0.25 apart. Only two of the needles have a loop handle (The image displays six in the add).

The 0.4mm Cleaning Needles came separated from the rest, but all of the other needles are mixed together. Only 2 of the needles had the loop as shown in the sample picture. I had to take a picture of the needles and zoom in to try and distinguish the various sizes (and even then, Im not confident I did it correctly). The needs should have been packaged in a way that makes each size easy to distinguish. The human eye cant easily distinguish between 2 needles that are 0.1mm difference in thickness.

Ive since gotten rid of having filament continue to extrude after it stops, so I dont have any dangling filament to brush off, but when I was having that problem, these brushes were life changing. BTW - if thats a problem youre having, invest in a dry box. Definitely worth having in my tools either way.

Only touched the kit once so far but it appears to be everything its supposed to be. Ill come back to add the 5th star if it works out good and long.

Its a great kit, just beware that it has so many pieces that you need to print a pen cup or bowl to hold it... This is coming from a gal who found a metal toothbrush end up in her bathroom because my SO thought I had left it was a weird tooth brush I had bought that fell on the ground.

My husband uses these for his 3d printer and after 1minth they are still holding up well.

The product arrived in a timely manner and included everything in the picture. No damaged items and everything is as I expected it to be.