Nimbus 26 Inch Mountain Unicycle - Nimbus 26" Mountain Unicycle Seat post clamp: Nimbus (black) DoubleQuick , Frame: Nimbus II MUni 26" (black) steel with 42mm machined maincap bearing housings, with magura brake mounts Hub/axle: Nimbus 36H A/S Disc ISIS hub, 100 mm center bearing to center bearing Tire: Duro wildlife leopard 26" x 3.0