Deity components tibia railed seatpostthe deity components tibia railed seatpost has been constructed using 3d forged 2014 t6 aluminium the tibia features an oval inner forge for optimal strength in stress areas a splined clamping system with spring loaded guts and weighs only 242g featuresmaterial 3d forged from 2014 t6 aluminiumproprietary 3d forge tooling for a thinner oval walloval inner forge for optimal strength in stress areassplined clamping system with spring loaded gutssingle bolt