Review on PGN 6001 2RS Sealed Ball Bearing for Enhanced Power Transmission in Bearings by Roberto Manzer

I have these to replace the original shielded bearings in my Delta 4x6 belt/disc sander. They fit great and work great. I chose rubber grommets because I mainly use my grinder for metal work. Metal dust does not bode well for shielded bearings. Practical 4-pack. Now I have spare parts and the price can't be beat. I would buy them again.