Based on our own experience, we can attest to the amazing results produced by this abrasive brush. The brush worked perfectly on the rough surfaces we attempted to smooth out and produced a smooth finish in no time .Its double banded steel construction added to its overall durability MAKING it a long term investment. However we did find that the brush is slightly heavier than other options we have tried, which may cause fatigue during extended periods of use. Overall, a great purchase for anyone in need of an effective abrasive brush in the Industrial and Scientific field..