Both strong and light weight, the new clamping base is perfect for mounting numerous electronic devices in transportation vehicles. RAM Mounting System's composite glare shield mount is easily installed and removed. To mount the Combination Glare Shield Yoke Mount, simply place the yoke clamps around the rail and then screw the large knob at the end of the threaded rod. The hand tightened clamp makes this the perfect mounting system for unusual shaped rails. The rail does not need to be perfectly round to mount this base.