I'd think they would be Hang Up City,,But have never tried them,So what do I know:p,As far as the blocks. I work for a const-Co that install's retaining walls,We have some of the blocks left over or gets broke on most job's. They weigh any where from 60# & up,May check around where you live & find some of them.I know I'd give ours away just to keep from having to haul them out...