Retractable magnet that allows the user to keep the nut or screw inside the nutsetter head. 1/4” hex shank size. Ideal for repetitive assemblies of high precision and speed. Exceeds ISO 1173 standard. 1/4” hex drive nut setters with retractable magnet. Opening size: 14 mm. Box Depth: 26 mm. Total Length: 150 mm.