6 Pieces Stainless Steel Bore Brush in Different Sizes Twisted Wire Stainless Steel Cleaning Brush with Handle 1/4 Inch Hex Shank for Power Drill Impact Driver, 4 Inch in Length

I use them to clean out the piston holes on brake calipers of seriously clogged brakes.

Broke of as soon as I tried to use them. Coat hangers are made of stronger wire. DO NOT BUY!

As you can see in the pictures the bristles literally spun right out of the bit after using them for about 20 seconds. I was really disappointed in this purchase and now I know why they were somewhat inexpensive.

I used these brushes to help clean out the eye of an axe that I am restoring. One brush came apart in my hands when I picked it up out of the box. Another one came apart under use with moderate side pressure. The rest did okay, but I have no illusion about them holding up over the long term. If you consider them to be a single use type of item, you might get satisfactory results with them. But make no mistake, these are cheaply made.

Not suitable for heavy cleaning. Brushes collapse to shaft and the shaft breaks on the smaller sizes. Light duty only.

One broke so not very sturdy cheap metal

Well this is my very first total disappointment review on Amazon. The product didnt hold up. First time I ran this down a bore in an aluminum tube it fell apart. The bore was ever so slightly smaller in diameter than the brush used. hardly any interference fit at all. Ran it up and down the bore and stainless steel wires started falling out. Bummer because there were a good fit for my project. Oh well. Ill return them and try another brand.

Literally 1st use & not 5 minutes in and it snapped in half! Dont waste your money on this junk! Needs a zero star option for durability & sturdiness!

Good