The trailer is quite heavy when I try lifting it up. The whole frame is welded. Haven't put it on a scale yet. But it handles nicely on my bike. I'm not too concerned about the weight since I plan to stick a Crystalyte 3505 motor in my front wheel.
The hitch is made from two strong swivel caster wheels (wheel taken out). One is attached to the trailer and the other one is attached to my bike. Works perfectly and moves in all directions.