Model SC-FR-102 single speed bicycle freewheel, finished in an even golden brown across the sprocket and body, with two small holes on its face. It comes with 16T, 18T, 20T, 22T or 24T teeth and threads onto the rear hub, driving the wheel while pedalling and letting it turn freely when the pedals stop. Tapping is 1/2" x 1/8" x 24 TPI/1 mm, with half or full balls available. Finish options are Black, BLP or Golden, to order.