These are the second time I purchased a complete kit for one of my race vehicles. The second purchase was for my TLR 22 SCT 3.0. The bag was missing two small steering bearings, but included two extra wheel bearings. I sent a short message to Acer Racing. They responded by apologizing and said they would send me the missing bearings asap. I have a Trackstar wheel balancer. Bought it cheap, but the bearings included were terrible. Purchased Acer Racing bearings for it, and it made a unbelievable difference. Tires that I thought were balanced were not. So glad I put the AR bearings in it. This is no bull**** review. My Youtube channel is Vertical Extent RC. I'm not paid or sponsored. If you are considering ceramic bearings for anything, AR is the way to go. Before considering harsh reviews about a bearing breaking, consider how difficult it is to manufacture these things. Every once in a while there is a variance, just like a bad burger at McDonalds. The thing is that AR will immediately help you out. And AR is a USA company and their products are made in the USA. I'm a customer for life.