I spy an old inward clamp?

[Zaηe]

Just browsing and i found this;
http://www.youtube.com/watch?v=8KUeYXcjAh0&feature=related

 

[Isaac Coy]

hmmmmmm

 

[Michael Rankin]

I'm pretty sure it's a Deity clamp.

 

[TomK]

yeah inward stocked deity clamps.