Made by the folks at Little Spider. I have several of their props from way back when they were getting started in the business and they made pretty good stuff and very good prices. I still have most of it! WOW...7' long!
They're not actually made by Little Spider anymore. Little Spider got out of the prop business and does custom work, like mini-golf courses, now. Haunted Enterprises bought the molds and rights and does all the manufacturing now. I was disappointed cuz Little Spider stopped making the props right when I was about to get one of these guys, so I just had to pick one up when I saw them at HAuNTcon