The Radius - V telescope Ciao External Fold Handlepost is forged from aluminum for strength and features patented Fusion™ technology for an incredibly stiff coupling with the frame and fork. The Radius Telescope handlepost is adjustable so no matter how tall or short you are, you'll get the riding position that is most comfortable. DOES NOT INCLUDE THE MID-POINT CLAMP & Q-release Top section which it does not include measures 28.6mm (diameter)