2 USED O.S. ENGINES, ONE WITHOUT MUFFLER IS JUST AN OS MAX .25 AND THE SECOND ONE IS AN OS FP .25, ITS MISSING THE CARBURATOR ARM. BOTH ENGINES ARE FROZEN UP. THE THIRD IS AN MAGNUM XL.15 THAT ENGINE IS SMOOTH TURNING. THE ENGINES COME AS IS. WILL SHIP BY USPS TO LOWER 48.