X fan 80 x 80 x 25mm dc axial fans 12v24v ballsleeve bearing x fan rdh8025b1 rdh8025b1 is a high quality ball bearing 12v dc axial fan from x fan which has been manufactured to a high standard this brushless cooling fan has passed through stringent quality control testing and has the following safety approvals x fan rdh8025b1 80 x 80 x 25mm axial fan 12v ball bearing