This is a Small Imperial Military Semi Tractor/Trailer Flat Bed Truck with a load of Missile.  It is made of plastic and is a highly detailed, Note the trailer can be detached.  The trailer is about 3 inches long and it is 4 inches long with the cab.  I bought this as part of a job lot and it is in very good condition.  The coin in the picture is a Dime to show just how small this item is. 

I will gladly combine these small items to save on the shipping.  Each additional Micro Machine item would be just $.25 for shipping.