SONA Raleigh / French type bicycle hub, model SC-HB-102, has a thin barrel with open ends and is made in front and rear versions. It forms the centre of a bicycle wheel, with the spokes laced into the drilled flanges and the wheel turning on the axle. The front hub measures 5/16" X 5 1/2" and the rear hub 3/8" X 6 1/2"/7". Finish is Black/BCP. The slim barrel carries the SONA name and runs between two drilled flanges, with threaded axle ends and nuts on each side.