Vision Metron 60 SL TL Disc Wheelset - 700 12x100mm/12x142mm Center-Lock XDR BLKVision Metron 60 SL TL Disc Wheelset 700 12x100mm 12x142mm Center Lock XDR Black. The Metron 60 SL TL is Visions Aero Stage Race wheelset. The Metron 60 is the one wheel youll ride once and wont want to ride without again; it sits comfortably in the mid range of Visions Metron rim depths and offers the most versatility in the line up. Full Carbon wheelset produced with Vision reliability and high performance technology Tubeless ready design with