This is another "prototype" handle they also had at the show. Apparently this one is adjustable. Those round rings around the hole hold the assembly together. I believe the top and bottom arm pieces must be splined or similar so you can disassemble it, index to one of the adjustment locations (3 or 4 I think), reassemble the unit. Pretty cool idea. They weren't sure about coating options yet but had a few things in mind it sounded like.