CNC-machined drive shafts with hex adaptors are made from tough, high-grade T6 aluminum and high-strength steel pins and fasteners. Ultra-smooth operation, high-precision design and fit. Provides extra strength for use with high-performance motors. This set of two drive shafts comes completely assembled, ready to install. A “must have” for serious drivers involved in high-competition racing. For use with hex-hub micro wheels only.