Bessey G7011 4 (U.S.) or S10-ST (outside the U.S.) Term "S10" is used for that video (keeping it simple).
Official desciption:
Highly versatile, this unique tool is ideal for holding rounds, rectangles, and odd-shaped objects. Features galvanized spindle with large Acme thread, non-marring, glue resistant jaws and comfortable wood handle.
![](https://i.ytimg.com/vi/za5zAG8C9Gg/maxresdefault.jpg)