The Tekno RC TKRBB050825 is a set of 5x8x2.5mm ball bearings (4-pack) designed for use in various Tekno RC 1/10 and 1/8 scale vehicles. These compact precision bearings are commonly used in steering rack and bellcrank/ackermann assemblies, helping reduce friction and improve steering smoothness and response. Built as direct replacement parts for multiple Tekno platforms like EB48, NB48, ET48, SCT410, and MT410 series vehicles, they are a standard maintenance item for keeping your steering system tight and efficient.