A device (124) for securing a wiper blade (108) in a wiper (102), extending along a first longitudinal axis (XX), has both an end fitting (126) mounted on one longitudinal end (110) of said wiper blade (108) and a locking means (128) attached to said end fitting in order to lock said wiper blade inside said end fitting (126).

The locking means (128) consists of a clip having arms that are able to fit in receiving means (146, 148) formed in said end fitting (126), at least one of said arms bearing at least one claw (186).

And at least one of the receiving means (146, 148) is configured to deform said at least one arm such that said at least one claw is engaged in said blade.

Element (26) for a connection system between a windscreen wiper brush and a driving arm of said brush, said element being configured to be fixed selectively to terminal pieces of a plurality of arms, such that the element comprises at least one first bearing surface (48a, 48b) and one first locking means (27) configured to cooperate with a first arm, and it further comprises at least one second bearing surface (60a) and one second locking means (27) configured to cooperate with a second arm.