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)

Works very well removing rust or anything unwanted that causes clog.

Refinished some lawn furniture, got into some tight spots. Work excellent!

Great product works well

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.

These are fabulous for cleaning the rust and crud from antique and surplus rifles and pistols. Too harsh for everyday cleaning and maintenance, but when you’ve just unboxed that relic from Kathmandu, Addis Ababa, or Santiago these brushes will quickly get you to the point you can try different cartridges or do a chamber casting.

These do not hold up well at all. They bend and break very easily.

About 50% arrived bent. Really? On a drill how well do bent drill bits work? Not well and they are dangerous. Get a better brand. Returning them.

These were just what I needed for rebuilding the support bracket on my disk brakes. The guide pins were stuck in place when I took them apart and wouldnt go back in smoothly after cleaning just the pin. I was able to clean out the support bracket with these brushes and put the guide pins back in smoothly. Im sure Ill find other uses for them around the car.