My friend got one for skating today actually, little differnt. There pretty stupid, and there narrow as fuck. Save up and buy an element flat bar, they can adjust height and there I think 8 feet long, or make your own out of pvc pipes.
yeah definitely won't waste your money on that kind of stuff, my friends and i did like 10 years ago like the stupid kids we were and we had fun with it and all but you can do way better by just getting some big PVC or other things. that skate rail is short, small, sketchy, doesn't slide that well, etc