" my pole is also hollow > , and the crab will come off, " Nancy, The swivel inserts exactly where the crab goes, into the end of the pole. The bar IS the tongue. I had it made. Don't know if they are available already made. I have two: one is the same length as the distance between the center of each single tree. That one gets hooked to the middle "D" ring on the breast collar. The other is shorter and gets hooked to the side "D" ring that is off center; where you attach to the crab. The difference being that the crab is very short, rigid and so the horses pull away from it.. I remember my carriage had that same bar across in back of the seat too. I took it off and exchanged it for a flat one that is closer to the seat. The "seat assembly" doesn't touch the carraige at all, except for hooking it to that bar, and where it rests at the bottom. So there is no rubbing of paint. Because it doesn't touch anything, it actually feels like it's padded when you sit on it, because of the slight give. Helen _________________________________________________________ To Unsubscribe, change to Digest or Vacation mode go to: http://www.drivingpairs.com/dpmem.html `````````````````````````````````````````````````````````