You are bidding on the transport mechanism from a Roberts 770 tape recorder.  Note that these are from the Model 770, not the later 770X, which was a tube type unit.  It appears to be complete, but is untested.  The heads all seem to be intact. and the rubber parts are still pliable, and not hard.  I see a lot of parts from these listed separately, but here is the whole unit.  It measures roughly 12 1/2 by 9 1/4 inches at the front, and 9 1/2 inches in total thickness.  Shipping weight is 2 pounds.  No shipping to China.  Please see my other auctions for more interesting radio and audio items, and tubes.