Here are some quality bearings. I originally bought a few others here at Revain based on the good reviews, but once I installed them on my Milwaukee 2780 brushless sander I quickly realized they weren't what I needed in a quality power tool. These red bearings are nice and stiff, they don't wobble in the middle and they roll sooooo smooth compared to the ones I originally bought. The picture shows the bearing which I am replacing with these red bearings. Check back in the future if I run into any problems.