Review on 🧹 3M Roloc Bristle Grade 18730 by Thong Pilla

The first time I used one of these was to clean surfaces on my engine to install new intake gaskets. Very well cleaned old dirt and caulk. Just be careful not to apply too much pressure as it is aggressive enough to remove some of the surface material. I think they could be a little better for the price. I would buy two if they were around 5-6€.