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