Here is a 50mm bearing cassette along with bearing in new condition.   This is the actual item you will receive. This assembly would retail for $213. This was removed from a new kart in order to replace a bent frame.  It has no previous track use. 

Please make sure you know what you are receiving. All sales are final. We are in complete liquidation and therefore we aren't able to accept returns or exchanges. It is therefore imperative that you know what you are purchasing. Please read descriptions!