Review on SI FANG Abrasive Polishing Accessories by Johnny Nguyen

I have bought different brands of grinding wheels. Those are by far the worst. Expect to go through 4 of these compared to a good quality one. Without pressure, the holder rotates, but the abrasive remains stationary. Also, they just don't last long. They fly apart easily. The metal mounting circle in the center is larger than others I've used. This leaves less space for abrasive material. It's garbage. look elsewhere