Review on RaceBon Hardness Polyurethane Replacement Bearings by Mike Shah

These wheels are not high end wheels. They are pretty basic and have small air pockets in the urethane. They are round and roll well. Good rebound and bearings are not bad. They are definitely an update on the 82A inline skates that were new on my Zebrablades. The bearings are very smooth and that is also an improvement. They are sealed but I believe they are filled with grease. I'm new to builtins but they work fine for me. If I remember I will try to update the durability and longevity information. Probably not the best, but they will help you go cheap. I would buy again.