Rail Car Stop

I spotted this pair of rail car stops in Bowie, TX.  A friend of mine found one of these on the side of the highway a year or so ago and brought it home.  We had to do some research to figure it out what it was as we had never seen one before.  According to a website that sells this type of equipment, they weigh 173lbs. and cost approximately $750.  Its probably for sale at a discount if anyone wants it.  It's red in color, not orange as seen below.