Review on CNBTR Groove Caster Industrial Machines by Kobby Fairchild

Bought 8 pcs. They are processed to the lowest standard. The bearing housings on most are so loose that the wheels whine, but there's no consistency. Everyone is different. The position of the mounting holes does not match either. Expect to poke holes in them for them to align properly with their host. Ultimately, I think the cutscenes are fine for my application, but even at this price point, I was expecting better quality. EDIT TO ADD: Turns out the wheels aren't even round. The wheels hit the track because they are either egg-shaped or bored off-center. They are also not set at the same height from the base. I have one that is a nice 3/16" different height just because the manufacturer can't drill holes that match the pattern. I wish there was an alternative manufacturer for this. I am frustrated with poor quality issues.