One Piece High Alloy Aluminum Construction Assures Total Weather Protection Gold Corrosion-Resistant Coated Holds Masts Up to 2 Diameter Requires 3-Wire Rotator Cable UL Listed AC Operation Fully Automatic Heavy-Duty Motor Handles Large Antenna with Plenty of Torque to Break thru Heavy Ice Loads Strong Machine-Cut Gears that Won"t Bind Brake Pads Hold Firm to Prevent High Wind Damage (Tested to 70MPH) 2 Synchronized Motors give Exact Degree of Station Location