Aain AA017A4 3 Inch Crimped Wire Cup Brush 4 pack, Wire Cup Set For Grinders 5/8"-11 Unc

work very well

Using on concrete wall to remove paint.

The delivery time very good and the brushes work very well.

hording up well, as described, and fast delivery

There are a few bad reviews out there for this guy.The wires fly out... True. I've never used a wire wheel or cup brush that this was not true. Better products hold the wires better but still let them go. Wear appropriate gear. This cup brush holds them well. I am very satisfied with the product.The wires break off... Also potentially true. I have destroyed a cup brush in very short order. I was using it incorrectly. If you push with too much pressure, you force the bristles around corners, or you sling the bristles into narrow sharp edges, anything that sharply bends the bristles as they are rotating, of course they are going to break off fairly quickly. Angle grinders are generally spinning them above 10,000 RPM.The knotted cup brush works better... Depends on what you are doing and what you are needing. The knotted cup brush has much thicker bristles. If you are removing paint/rust, yep it will do it faster. It may also remove some metal under the paint however. They are very aggressive. If you are pushing with lots of pressure or flexing bristles around corners, they will survive the abuse better than the finer bristles.I have and use both styles of cup brush for differing applications. I like them both. I use the finer bristle brushes more often. Usually for removing metal scale, paint, rust, etc.