An anvil device (1) for a fitment applicator is described, where the anvil device (1) includes one or more arms (2), where each arm is equipped with a carrier (5) for the positioning of a closure (22) against a contact surface (6) for co-operation with a welding head (21) during fixation of a closure to a cartoon, where the carrier (5) and the contact surface (6) are aligned on a contact device (4) which is adjustably fastened to the anvil device (1).