... in machining,mould producing industry.2.Using high-performance permanent magnetic materials,strong in magnetic suction,patent circuit design,remanence almost zero.3 ... the bottom of lifter,can lift opposite round steel or steel board.6.Without electricity,magnetic lasting popularity,more safety on using ... Max. Pull off Force(kg)N.W.(kg)Steel plate Round PlateL B H R120013QZ1-0.4B400 200160 100 105 220QZ1 ...