McGrath, here's their home page: Third Hand Capo Company. It has a small but serviceable photo and there are other pages that go into detail on using the device. As you can probably see, it has six segments, one for each string. Each segment can be adjusted laterally along the pivot rod to align it precisely atop the string, and each segment can be rotated down to press on the string or up to clear the string. The pivot rod is offset toward the top to allow this. The segments are flattened discs, the flat being the part that touches the string (I presume this is to prevent any rolling motion that could let the capo or a segment move out of place). It's quite an ingenious idea.