Can someone tell me what the tool is called, that is set on the workbench?
The image is from https://youtu.be/VK_ZozyqDYQ
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The narration of the YouTube video you linked to specifies that it's a router he's using. At 1:32 he says "then with a router bit like this one I route the zigzag shape on two faces".
The bit alone is likely to cost cost upwards of $60 depending on the retailer.
The picture shows a router bit, and a router table supporting a router to drive that bit. A cheaper table can be built, but you're probably looking at several hundred dollars of tooling there.