That type of tractor is so common overseas ... and used for so many things. That one is probably the smallest I've seen. The ones I saw in SEA and Germany were fairly large. I remember watching a fella pull a wagon up a vineyard slope in Germany with one. It was spinning and bouncing a bit and he had weights on the front to try to help with traction. (steep hill) But it was probably like 25 - 30
hp and the wheels were 18 - 20".