The ball bearing set for the Tamiya DT-03 chassis is an essential replacement part specifically designed to optimize the performance and longevity of RC cars. This set includes high-quality ball bearings that ensure smooth movement and improved efficiency of the drivetrain. Weighing 1406 grams, it is lightweight yet robust enough to withstand the demands of model building. The ball bearing set is compatible with the DT-03 chassis and is ideal for hobbyists looking to upgrade or repair their vehicles. Using ball bearings helps minimize wear and enhances the overall performance of the model. This product is an indispensable accessory for anyone who values quality and reliability. The item is sold as a single piece and is a worthwhile investment for anyone looking to keep their RC car in excellent condition.