The Mega-Duty Mounts are our strongest mounts available. The Mega-Duty mounts come with two fully adjustable ends, one on the back of the holder and the other on the mounting base. Each adjustable end is designed to rotate 360 degrees and angle nearly 180 degrees. Both ends of the mega duty mounts are manufactured out of high strength aluminum, and have an aluminum bar connecting the two. For ultimate security replace the wing bolts with the included allen bolts.