4 way multiple ramp set for bikes, scooters or skateboards. (Elm Park RM12)

I attached a link to show what it looked like new.
Look at this product that I found on google.com https://share.google/AZD1FsrNAMmEpoqjS
I have all the pieces, not sure if all the bolts. It all fits together or can be used as individual ramps for jumps.