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

Not a terribly robust design, but they do what they are supposed to do. I have worn out two so far, using them to get rust out of a complex piece of metalwork with a lot of crevices and corners. I have may leaned too hard on one, which after about 20 minutes snapped off at the base of the brush. I wore out the bristles on another one. But, they did the job a wire brush is supposed to do.

Great that there is various sizes to choose from in the set!

They were as advertised. Did they work? Yes. I used up 4. Each one cleaned out one slide bolt hole on a brake caliper bracket shredding in the process.

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 am on a small project to re-conditioning all my house shower faucets with 27 years of calcium build up. So I bought this to use with my cordless drill and was able able to do this clean up in less than 5 minutes! what a time saver for sure! My only problem that I realized is these brush bits are bit short. but removing plumbings inner pipe calcium was easy and fast, including grinding down the inner part of the shower spout was peace of cake.

Excellent

These are pretty flimsy and break quickly they are not a great buy.

3 brushes broke in 2 minutes. Complete garbage.

Lost the first set then found it, works well.

These clean in tighter spaces than you can get with just a wire wheel or hand brush.