3M 048011-18730 3M-18730 Roloc Bristle Disc Grade-50, Size-2, Green

Used this today on my 40 + year old water pump gasket. Cleaned it right up.

First day of use. Torn a part

Had to do a headgasket on my isuzu and this made my job much easier!

Works great.

The green 3M bristle disc removes paint and rust quick and doesnt mar the surface. They are a little overpriced but work way better than the imported - no name brands.

used wheel to remove RVT on front engine cover.

If you want to clean metal for welding or remove paint from metal--this is pretty quick.The only issue is if you hit burrs the tits on the bristle will fly off and that hurts a little bit that is the only down size. It okay if you wear safety glasses you are good.

Worked great for cleaning engine block during he’d gasket replacement.

I got the green one which is for iron surface finishing or body work, my words as well as other Techs. White is finer grit (under 200 though) and better for aluminum surfaces. Let me caution you that no matter how safe Techs like myself want to say these are, they sort of arent in some situations. Polishing a blocks cylinder head surface and getting some down debris that you may not be able to see down in the engine...not ok. Some people line things with oil and paper or q tips as I do to plug passages and holes. etc. Water jackets not a huge deal, if you are going to flush it and use an compressed air to clean away debris...yet not perfectly clean inside engine. Many techs will NOT use these on blocks surface. I do. You sort of have to decide for yourself the risk and proper preparation to actually use it on a block. Other places I dont even prep I just buzz (lightly) off the material and enjoy the long lasting bristle disk for about 3 heads or various jobs. I can use the worn down flat part in the end later for rust on the frame or body. So I feel I get good use here, but it is costly. definitely better than 3m roloc fiber disk. Longer life, less hassle.

It is the best tool to clean without hurting what you are working on