Marco Pedestal Rock (natural top).  This is a ReefSaver rock that has been machined flat on both the top and bottom creating a smooth surface for gluing frags.  Perfect for encrusting colonies. 
Great for adding that extra outcropping, or to use to create some shaded area, more habitat, more coolness 
Everyone wants more coral mounting area and more coolness
Sold per piece average size is 7×11″ pedestal base is 3″ overall height is ~5″