18-Piece Bore Brush Set- Stainless Steel Bore Brushes with 1/4" Hex Shank Twisted Wire Bore Brushes with Different Bristle Lengths for Tubes Ports Bearings Cleaning (8mm, 10mm, 12mm, 15mm, 17mm, 19mm)

An Ebay seller sold me a roof rack with the wrong screws for my car. He gave me screws to chase the paint out of the threads but they were the wrong size. If I hadn't known better, I would have stripped or damaged my threads! I had no choice but to spend $40 on new correct screws and use these wire brushes mounted on my drill to clear the thread out of the threads. They worked like a dream.

I use these to drill rot out of roots which I am turning into “sculptures.“Used that way, which was not what they were made for, they do shred wires after maybe 15 minutes yet, overall they are good

Need to be careful not to put much lateral force on these or the center shaft will bend or break. If you’re careful to keep it centered they work very well.

I have a wood stove with a draft control that becomes sticky from time to time and becomes difficult to turn. I bought these brush bits to clean the threads so the knob would move freely. There were 18 different brush bits and one that was perfect for the job! So happy I bought these brushes. I know they will come in handy for many DIY jobs around the house.

Pretty flimsy construction. Bristles bent and broke off easily. Shaft spun out after applying little pressure. Suited my purpose of light cleaning of an aluminum motor part.