This is a Really Right Stuff full gimble head for photography. It's great for large lenses and multi-pane photos that need to be stitched together. If you know Really Right Stuff, you know it's top of the line of gear. It feels great just holding this in your hand and they're located here in Utah. I used this once. It's essentially brand new. I'm asking only 65% of what it would cost you from RRS.