ruote vision metron 45 sl discMetron 45 SL Disc is Vision's wheelset for climbing and cyclocross. Metron is Vision's fastest and most aerodynamic range. You will find Metron components in top level road and triathlon competitions, providing athletes with a significant competitive advantage. Each Metron wheel is available in both rim brake and disc brake versions, as well as Clincher TL and Tubular versions, to meet the needs of every cyclist. FEATURES Carbon rim 45 mm profile 21