Guys, you are really screwing up here. Those are from Nakpa, an engineering firm for NASA. Those were designed to lift the moon buggy, if necesaary, so that any obstacles could be traveled as necessary. I have seen those sell for at least 500.00 at my local flea markets here in KY.
It is sad when NASA cannot bring the change it deserves. Oh, and it is missing the 200.00 specialized hammer that is required to drive the shackle bolts during installation. Might be why they are only 300.00.
( :