Mavic crossmax pro carbon mtb wheelset boostthe legendary mavic crossmax goes carbon the full carbon rim offers great lateral stiffness whilst the enhanced fibre lacing gives maximum vertical compliance the two cross spoke pattern on the front and rear offers great comfort and control featuresrims material100 unidirectional carbon fibre drillingtraditional valve hole diameter6 5mm tyreust tubeless and tubetype etrto size 27 5584x23ss etrto size 29 622x23ss hookless profile re