Control the shuttle and hit the corners with dynamic shot-making... The secret behind NANORAY’s exceptional performance is a unique head construction featuring YONEX’s new Aero Frame structure where the frame sides vary in thickness between the top and bottom of the head... Flex:.. Stiff... Frame:.. H.M. Graphite... Toughlex... Shaft:.. H.M. Graphite... X-Fullerene...