These duralumin move shafts were created to be used on M-07 and M-08 chassis universal shafts, adding to a more efficient and durable drive train! • 33mm Lightweight Aluminum Swing Shafts x2 • Drive pin and cross shaft position are 90 levels apart for smoother rotation under power. • Tamiya blue anodized finish. • appropriate for M-08 Concept and M-07* chassis automobiles. • NOTE: M-07R chassis cars require products 51444 and 51445.