The invention relates to a lockable ejector device for a furniture part that is movably supported in a piece of furniture, including a fixing device for locking the movable furniture part in place in a closed end position, and at least one ejector element for moving the movable furniture part from the closed end position into an open position, wherein the fixing device comprises at least two locking units, which are coupled to each other and each have a receiving element for an engagement element. The at least two locking units are operatively connected to each other by way of a synchronization mechanism, which has at least two coupling elements, each associated with different locking units, and at least one synchronization unit. The coupling elements are coupled by way of the synchronization unit with respect to the movements thereof.