Abstract: The present disclosure relates to a workpiece carrier for transporting and/or storing components of a drug delivery device. The workpiece carrier includes a body including a planar-shaped bottom area. The planar-shaped bottom area includes an upper side and a bottom side opposite to the upper side. The bottom area includes a number of longitudinally extending hollow protuberances protruding from the bottom side and forming longitudinally extending cavities in the upper side. A longitudinal end of at least one of the protuberances or cavities faces away from the bottom side comprises an aperture.