The Arrma ARA330582 Hub Nut is a set of four black nuts designed specifically for the Kraton 8S and Outcast 8S RC model vehicles. Manufactured by ARRMA, a trusted brand in the radio control and control line industry, these hub nuts are essential components for maintaining and upgrading your RC vehicles. The black color adds a sleek and stylish touch to the overall aesthetic of your remote-controlled vehicles, making them a practical and attractive choice for enthusiasts and hobbyists.