AC Electrical Axial Fan---- Description: Rated Voltage: AC 110V / 220V, 50HZ Form of Bearing: Ball Bearing, Sleeve Bearing Motor Design: Reliable Brushless Moter Construction; Motor Protection: Impedance Protectd; Material: Frame: Die-Cast Aluminum Painted; Blade: Thermoplastic PBT; Lead Wire: 22AWG. ---------------------------------------------------------------- DC Electrical Axial Fan---- Description: Rated Voltage: DC 12V / 24V Form of Bearing: Ball Bearing, Sleeve Bearing Motor Design: Reliable Brushless Moter Construction; Motor Protection: Impedance Protectd; Material: Frame: Thermoplastic PBT; Blade: Thermoplastic PBT; Lead Wire: 24AWG.