kweiny Drill Bit Multi Size(Needle) for 3D Printer Nozzle Cleaning 5PCS Diameter 0.2mm 0.3mm 0.35mm 0.4mm 0.5mm

I've had these less than a day and am already very glad I got them. I got an assortment of smaller nozzles to experiment with and wanted to be prepared in the event of clogging. The way these flex, I don't think there's any risk of accidentally snapping one off in a nozzle. Best of all, they already cleared a partial clog my printer has had since day one. Probably the 5-piece set would be sufficient for most users, but it's nice to have the intermediate sizes. The 0.4 on its own couldn't clear my partial clog, but going at it with the .35 and using some rotation and lateral pressure was enough to allow the 0.4 to clear the nozzle completely.

I would not call these "drill bits" but they are excellent needles for unclogging a 3D printer extruder hot-end. I only needed the 0.35 and 0.5 for the nozzles I have, but I ended up taking the set to an expo and the guy at the table next to me had his printer clog up on him during the show, so I was able to give him the 0.4 needle. It was put to good use.

They do what they're supposed to just as well as any others I've used, but I prefer the color coded ones. I dipped a half-inch of the handles into nail polish of various colors so I can tell them apart more easily, as I'm sure the tiny paper hand-written labels will fall off in time.

I have not used these yet, I bought them for spares, they are flexible and should work very well when I need them.

good but I would like to order sizes individual sizes.

A bit hard to insert, just a needle not a drill bit!

nice

Works beautifully to clean heads. Also useful to measure nozzle opening sizeNot brittle like many other head cleaners.It flexes insread of breaking