A quick learner from Philadelphia says:
October 10, 2016
In the pic I sent the bottom keeper snapped. The top one is good. I need a replacement. Would you have these and possibly one that's not plastic??
Dave from SWISCO responded:
October 12, 2016
Hello! I can help. I'm not sure why but it seems like this tie bar guides is changed by the manufacturer all the time. The most recent version is our 39-417, which also happens to be the only version. I'm afraid they don't make this in metal, and I don't think they ever intend to. I apologize for the inconvenience.