The athletic skill level of the person using this product is:advanced
okay ive had these bearings for about 9 or 10 months and they are well worth the money. I would definetely recomend them. they are only getting dirty quick now cuz i let someone else clean my shields while i was cleaning the bearings and they bent them. so without the shields they get get dirty. so just next time i get bearings im gonna clean my own shields and my own bearings. u shuld definently buy them and make sure ONLY u clean them.
Pros: durable, long lasting, great speed, great for the money
well if u dont ride threw dirt n stuff and you clean them every 2 weeks using acetone in a bones bearing cleaning unit then bones speed cream and keep them in good condition they will spin up to 45 seconds each but take VERY good care of them