Arrma Kraton 4S BLX Ceramic Sealed Bearing Kit. (2) 5x8x2.5 Ceramic; (4) 5x10x4 Ceramic; (4) 8x16x5 Ceramic; (6) 10x15x4 Ceramic; (1) 10x15x4 Flanged... If you find a variation or mistake in our kits, please contact us so we can look into it. In many cases the bearing sizes may change depending on your particular model and the date that it was manufactured as well as different hop ups you may have installed. This is a Team FastEddy Arrma Kraton 4S BLX Sealed Bearing Kit. FastEddy bearing kits include high quality rubber sealed steel bearings, with bearings specific for a particular application. So instead of spending more money than you need picking and choosing a bunch of individual bearings and ending up with leftover bearings you may not need, grab a FastEddy bearing kit and get your rig... PLEASE DOUBLE CHECK you R/C before ordering to make sure you are get all the proper bearings. Arrma Kraton 4s FastEddy Bearing Kit For BLX V2 - Sealed Performance Upgrade Rc Drag Kit Arrma Kraton Bearing Kit New Wave Arrma Typhon 3S BLX Sealed Bearing Kit - Team New Wave 5x8x2.5 8x16x5 Bearings