These are 5.8mm short ball connector nuts, which are included in Item 54878 RC Upgrade Set for TRF Super Short BB Dampers. They are meant to be used as spare replacement nuts for racers who have upgraded their TRF Shock Dampers to the upgraded spec. - 5.8mm Damper Ball Connector Nuts x8 - Steel components have a special plated surface for smooth motion. - 2.5mm hex head holes facilitate tight attachment. - For use with Item 54871 and Item 42343.
