I have a bumper jack for (I was told) a 1949-50 olds and other GM cars that have a half round edge on the bottom of the bumper. It came with a 1950 Ford car I bought. If anyone is interested, I can post pics. Free pick up or pay for shipping. The head of the jack appears to be cast iron. The jack also works, but no jack handle. Thanks, Kevin. I just realized I put this in the wrong thread! Opps!