This abrasive filament brush was a game-changer for my metal finishing projects. As a result of my tests, I determined that it efficiently removes corrosion and other unwanted substances while leaving a smooth, polished surface. The brush is durable and long-lasting, making it a great investment for frequent use. The only downside is that it may leave faint scratches on softer metals if too much pressure is applied. Overall, I highly recommend this product for anyone needing a reliable abrasive brush.