These products are mainly used for Magnetic Network Wire Cable

Pot Magnet Used: Round Base Magnet with Cylindrical Borehole
OD 1.205 Inch, Thickness 0.188Inch
Round Base Magnet with Cylindrical Borehole
The 3/4" version of the Magnetic Wire Holder has been designed to be capable of not just holding more wires and cables, but also conduits. The Large version differs from the Small and Medium versions by having a larger magnet attached that can with stand more force and weight.