... 6061 T6 heat treatment ,one-piece CNC machine fully Integrated headtube ,screw and welding technology, ... 1parBrakeSBR-01Spring steel,suitable for 100mm/110mm wheel1pcsHeadsetSHS-01 integrated headset ,high quality bearing1setClampPSC-01CNC ,40mm*Φ31 ... .1parBrakeSBR-01Spring steel,suitable for 100mm/110mm wheel1pcsHeadsetSHS-01 integrated headset ,high quality bearing1setClampPSC-024 bolts, clamp ...