The trailer can be equipped with negative or positive airbrakes on 1 or 2 axles.
Picture shows airbrake negative on 2 axles.
Airbrakes positive 2 axles Art nr. 100629
Airbrakes positive 1 axle Art nr. 100629-1
Airbrake negative 2 axles Art nr. 100630
Airbrake negative 1 axle Art nr. 100630-1