A conveyor belt module of the type having eye parts projecting outwardly from both sides of a central spine, where a plurality of interconnected belt modules define a transport plane, where the eye parts are offsetly spaced along the spine on either side of the spine, said spine defining a central line laterally on each module, such that eye parts on one belt module may be interfitted between eye parts on an adjacent module and mutually connected in a hinge-like manner, characterized in that the belt module comprises at least two types of eye parts: a first type of eye parts arranged on one side of the spine having a central opening in a direction orthogonal to the transport plane with parallel sides delimiting the eye part, and a second type of eye parts arranged on the other side of the spine having a central opening in a direction orthogonal to the transport plane with parallel sides delimiting the eye part, where adjacent the distal end of the second type of eye parts, cams, projecting away from the sides of the eye part, are provided.