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)

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.

Good construction.

Great quality product will reorder as needed

I use these in my impact driver and with a hand tool to clean out bores while doing automotive repairs, they work great and are much more cost effective than buying off the tool trucks!

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

Works well for cleaning the rust out of your vehicles nuts.........!

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.

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

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.

Great product works well