ARRMA Infraction or Limitless 1/7 Ceramic Bearing Kit: both use the same bearings so this bearing kit will work for either. Made from our legendary Ceramic Nitride Pro Series bearing material, diamond polished silicon nitride ceramic balls, HSR inner cage technology and proprietary tolerances, then sealed on both sides with our no contact seals. We top off each bearing with our 100% synthetic lubrication for silky smooth and super fast world championship level performance. Our ARRMA Infraction ceramic bearing kit also upgrades your bronze steering bushings to our 6x10mm ceramic bearings for stronger more precise steering. It is a great and complete bearing kit consisting of a total of 20 bearings. Upgrade today!