Review on Precision Skateboard Bearings: R 1560ZZ Miniature Bearings for Unmatched Performance by Jason Porter

Failed guide bearings needed replacing on a 10 year old but little used Ryobi band saw that had 4 out of 5 original bearings failing. They fit perfectly and work perfectly, which is why I saw again. BTW the Ryobi website says their parts are out of stock so I'm doubly happy with them.