Review on 🧹 Abrasive Coating Removal Bristle Attachment by Brendan Thorpe

My engine block had to be redone after the machine shop somehow managed to scratch the gutter cover and oil pan mating surfaces. Decided to try these rims as my 3m was already tired. I don't use grit below 120 (white) for aluminum blocks, so I can't comment on the yellow. However, it immediately became clear that the disc was inferior to the original 3m. In the picture, 3m is on the left and the non-original one is on the right. I went half way down the valley only to stop and switch to 3 meters in case something else was wrong. The 3m had an excellent finish twice as fast. Also, the bristles started falling apart after the first pass. My 3 meter disc has been used and abused and the bristles look great. I will return them.