I have a older 8' pull behind spring tooth that has 3 rows of teeth. On each row the curved springs are attached to a 2" pipe. On each end of the pipe where it attaches to the frame are "plugs" that hold the pipe to the from. (shown in the picture). This plug is held onto the pipe with a cotter pin. One of these plugs fell out while I was using the spring tooth. I'm have a difficult time finding this part and where I might purchase another on. I have no idea of what the manufacture is off the spring tooth. The part looks simple enough that if I can't locate a replacement I think I can fabricate a replacement. If anybody can help I would apricate it, thanks