Pneumatically actuated magnetic gripper type PNEUMAG are pneumatic switchable bi-stable magnetic systems. Air pressure is only needed for switching. The magnet system is permanent and thus keeps safe even with pressure drop. PNEUMAG magnetic grippers enable thin, perforated or textured sheet metal parts (from 0,5mm) take and safe to transport what they recommended specifically for use in automatic and semi-automatic feeding systems as well as slings for robot grippers. PNEUMAG is the alternative to vacuum conveying systems. They were tested on a metal sheet St37 with smooth and clean surface. Note that depending on the application a safety factor of 2 or 3 has to be included.