Mooney M20B M20C Flap Hydraulic Actuator. It needs to be cleaned up and overhauled but the piston moves freely and there is compression now. I guarantee it can be made airworthy. I also have many early Mooney parts so see my other auctions or if you don't see it listed. Call, I may have what you are looking for. I really need to clean out my hangar so am interested in selling not listing for months and months. Thanks Gary 608 334 0051