Nimbus II 24" Unicycle (Black) Saddle: Nimbus (black) with front lift handle Seat Post: Nimbus 25.4mm x 300mm aluminum, welded rectangular mounting bracket, 4 hole Frame: Nimbus II 24" (chrome) steel with 42mm machined maincap bearing housings Hub/Axle: Nimbus ISIS (black) 48H, hardened CrMo splindle,100mm center bearing to center bearing Rim: Nimbus FS2432 24" (blue) 48H, 32mm wide, doublewall, reinforced eyelets, aluminum