hub.
I guess I should add more then 4 characters, to bad 3 didnt work.
The width of the hub flange where the spokes go will give you a rough idea of how wide the stator is, which is a general indication of how much power it can handle, people who sell hub motors listed as wattage do not really know what they are doing if they do not list a stator width size, its just a marketing gimmick, they will list that 10kw motor as 5kw or even 100kw or 1000kw = 1MW, I am exaggerating obviously but its not far from the truth. Just who is gullible enough to bite, and you did. You and countless others.