The Driver Extreme Magnum mirror mount is built extra wide, and extra thick to withstand the rigors of the road. The mount uses thick aircraft quality extruded aluminum designed for large trucker style antennas. Included with this mirror bracket is the DX239 heavy duty stud to help support heavier antennas that can put strain on your average stud.
The Magnum mount uses custom designed stainless steel carriage bolts with an extended square shank seat completely into mount bracket, eliminating the chance of turning and allowing installation with only one wrench.