it's a router. looking at the size its a palm router like this: http://www.kelvinpowertools.com/bosch-gk...

groovy wood tool

compact router or roto-zip maybe.

it's a trim router.

https://www.ridgid.com/us/en/trim-router

I cannot find the name of the tool, I just find parts for it. the tool makes groves or lines in wood. a picture of it is here

but I honest to god cannot find it anywhere. I just find the bit sizes.