With the Ribcage, the spoke holes are re-enforced with patented ribs that support the sides of each spoke nipple and eliminate the possibility of nipple pull through under even the highest loads The rim also features cross-over-spoke lacing, where each spoke goes from one side of the hub to the opposite side of the rim for an increased angle and therefore increased lateral strength The outer walls are extra thick to protect against case dents, while the other walls are extra thin to keep it light 20in Odyssey Ribcage 406 31 34 18 Dbl NMSW Hard Black 36 SV 482g 394