The name on the box is FerreTrail FUN-NEL maze. The address I find on the box is: Pets International Ltd, 2605 S Clearbrook Dr, Arlington Heights, IL 60005. I found the phone number in a business directory: 708-956-1130 . You can get straight ones or angled ones and six holed balls to connect tubes going in different directions (I have not seen one holed balls). The box has got pictures of ferrets all over it, but also says good for hedgehogs, rabbits, etc. The box says to send a picture of your ferrets playing in your most creative FerreTrail and they will send you a free ferret gift. I can't help thinking that maybe those one holed death balls that people say can cause suffocation or overheating or whatever might have been part of the FerreTrail and were supposed to end a tube so that fat ferrets could turn around without having to back out of the maze (this is conjecture I have no idea if this is true but it seems very possible). If they were used in this capacity I can't see how suffocation/overheating could occur as the attached tubes are vented for air flow. The 6 holed balls are part of the FerreTrail and are supposed to be used as connectors although I have seen people use them alone too. I have seen ferrets sleeping in them with their heads hanging out of the holes in pet stores. The 6 holed balls that I have, I use for connectors, as I feel the edges around the holes are too sharp to rest a neck on. Charlene [Posted in FML issue 1392]