Vision metron 55 clincher ud road wheelsetthe metron 55 is visions aero stage race wheelset visions metron 55 is the one wheel youll ride once and wont want to ride without again this metron 55 sits comfortably in the mid range of visions metron rim depths and offers the most versatility in the line up this wheel climbs descends corners and accelerates with the best of them visions complete wheel system has a 24mm rim width direct pull bladed spokes abs brass nipples 2 to 1 lacin