Vision’s Metron 45 SL TL Disc is the tactical wheel essential to your quiver. The Metron 45 SL Disc is an all-around wheelset built to take you from climbing all the way to gravel or CX. Victorious on the Cyclocross course the cobbles of the spring classics and the torturous mountain stages in the Pro peloton this wheelset can handle whatever you put them through.