Vision 2014 metron 40 tubular wheelset full carbon 40mm section tubular rim new extra light preload reduction assembly hubs for dp spokes 6 sealed cartridge bearings 2f 4r mounted on a 17mm hub axle diameter aero bladed spokes special abs self locking nipples artisan built entirely by hand includes special carbon qr qr 89 aluminium freehub body for shimano 91011spd or campagnolo 1011spd spokes 18 radial front 14 2 cross drive side 7 radial non drive side minimum tyre r