After trying this product in an industrial and scientific setting I was dismayed to find that the bearings were faulty and failed to withstand heavy usage. The quality of these bearings was lacking, and it was a major setback for my operations .The only POSITIVE aspect was that they were affordable, but it wasn't worth the hassle in the end. I would recommend spending a bit more for better-quality bearings to avoid the disappointment of malfunctioning equipment..