The windscreen wiper device includes a wiper element which is made of a flexible material and a carrier which operably supports the wiper element and biases the wiper element into a pre-curved position. A base is engaged with the carrier and at least one connector piece is releasably connectable with the base. The base includes a pair of holding elements which wrap around opposite lateral side edges of the carrier and a pair of laterally spaced side walls. The connector piece includes a pair of legs. A pair of projections are disposed in at least one of the side walls of the base and the legs of the connector piece and a pair of recesses are disposed on at least one of the side walls of the base and the legs of the connector piece for snappingly receiving the projections to releasably attach the connector piece with the base.