Abstract: A spoke fastening device includes a spoke fastening hole drilled through a spoke bed of a wheel rim for receiving a head and a stem of a nipple and a collar of a ferrule, the ferrule includes a casing on one end of the collar for engaging with the spoke bed and having an inner peripheral channel for receiving a sealing ring which may make a water tight seal between the nipple and the ferrule and for allowing the nipple to be tilted or inclined relative to the ferrule, the collar includes a peripheral groove for forming two separated cylindrical segments and for allowing the outer cylindrical segment to be flared by the head of the nipple.