Review on BQLZR SCS8UU Linear Bearing Bushing by Juzer Rashid

The bearings have a lot of play between them and the aluminum block. If this is not enough, then 4 mounting holes are not cut to the end, the metal is very soft and cannot hold a tightened screw, and the holes are not evenly spaced. I can deal with misplaced holes but they are the same but the sizes differ significantly (0.05" on average! They are awful! Don't even try to use more than one per string rod as they will stick due to misalignment remain, thanks to the terrible misplacement holes.