The athletic skill level of the person using this product is:advanced
So I started boarding in the 5th grade and I'm a senior in college right now. In all this time, I've never had to experience using such a terrible set of bearings.
Essentially what happened was that the bearing hub (the red, yellow, green and purple casing) would easily bend, perhaps after a primo. after this initial bend, the hub would slowly but surely distort its shape until the individual bearings would fall out.
These bearings are so cheap, that every single casing broke within 3 months. I had to replace both the inner and outer bearings on every wheel.
I bought these thinking that element, as a large reputable skateboarding company, couldn't mess up bearings.. i was very wrong.