Dura-Gold 6" Abrasive Filament Nylon Bristle Cup Brush - 5/8" 11 Thread, 1/4" Hex Drill Shank Arbor, Coarse Grit Angle Grinder Brush for Truck Bed Liner Surface Prep, Sanding, Rust & Paint Removal

The cup brush seems to be made well. It fit good on my 4-1/2" Milwaukee angle grinder. It performed as expected. I would recommend this product when you need a less aggressive cup brush.

This this is hands down the way to go for bedliner prep. So much faster than using any sander. You can use with grinder, But if your grinder is not variable speed I 100% suggest using one that is or a variable speed drill. It will 100% eat up paint to the metal. But at lower speeds is were it really shines and I 100% suggest to use it at. I was able to get a 5'7 bed 100% prepared in just a couple hours. I wish I had this when I bedlined my other truck. Easy to use. The bristles are in great shape still. If I ever need anther I'll buy it hands down.

I mis used this plastic cup brush on a dewalt 20v right angle grinder, it worked as good as I expected for cleaning the corrosion on aluminum , one caveat , the bristles will flare out with prolonged high RPM use

I used this while restoring an old wrought iron bench. It did a great job removing rust and grime in all the grooves and holes. Very durable. I used it hard over a course of about 3 hours and it didn't phase it a bit. I expect this thing to last a long time. Exceeded my expectations.

Worked as expected…. Good quality!

It worked, but not for long. This is better for light jobs. I got this hoping it would do a decent job getting some paint and a little rust off, and it did, but the cup started to warp and the whole thing came apart pretty quickly. I wouldn't get this for anything other than light to moderate work. If you want something for heavier work and rust, twisted knot wire wheels are the only way to go, don't use straight wire or this nylon wheel.

If you have anything that needs cleaning to prep for painting, cleaning cast iron pots for re-seasoning, and scuffing paint for spraying rhino - liners, this is the absolute perfect tool to use.

Durable and effective