Magnetic Base (ISO9001) a.On-off key-Circumrotating Type b.Magnatic stand&Holder c.More efficient fixing (1)Magnetic Base (Basic Model or with Fine Adjustment) Magnetic Power(kgs)Working Stem(mm)Base Size(mm)Base ModelWith Fine Adjustment40176/1263x50x55625-0300625-034060176/1263x50x55625-0301625-034180176/1270x50x55625-0302625-034240225/1663x50x55625-3300625-334060225/1663x50x55625-3301625-334180225/1670x50x55625-3302625-3342100360/2083x50x55625-3303625-0360(2)Germany Style Magnetic Base Magnetic Power (kgs)Base Size (mm)Main Stem(mm)Assistant Stem(mm)Model No6070x45x65230x16, M10260/16625-03438070x60x80412x20, M12260/16625-0344 (3)Universal Magnetic Base Magnetic Power(kgs)Base Size(mm)Working Stem(mm)With FullSteel ArmWith Steel Arm and Alloy JointWith FullAlloy Arm4063x50x55320625-1140625-1141625-11426063x50x55350625-1160625-1161625-11628083x50x55330625-1180625-1181625-1182 (4)Hydraulic Universal Magnetic Base, Germany Style. Magnetic power(kgs)Working Stem(mm)Base Size(mm)Model No.6033063x50x55625-13616038063x50x55625-13628033070x50x55625-13818038070x50x55625-1382