This is a set of replacement 6.8mm Hard Anodized 7075 Flanged Balls, intended for use with the Kyosho MP9. These are used to connect the front upper control arm to the front C-Hub. Extremely light, these parts lower stiction in the ball end and allow free movement. These parts can also be used to lower overall weight on all Inferno kits including the Inferno MP9, MP777, MP7.5, ST-RR and the Inferno GT and GT2.