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https://www.weizhongmagnetics.com/products/ndfeb-magnetic-fixing-plate-socket-system.html
Product Description
These magnetic fixing plate are used to fix the sockets system or accessories to steel formworks. They are made of steel with rare earth neodymium magnet embedded inside to provide strong magnetic adhesive force. We have standard size of diameter Ø60mm, Ø74mm, and Ø90mm, pull-force from 50KGS, 100KGS to 120KGS with different threads M12, M16, M20, M24, M30, M36 to suit different usage. Other dimensions can be customized and available on request.

For the steel housing the standard surface treatment is Zinc plating.

If you need any kinds of customised magnetic assemblies, please contact us, as a professional magnetic assembly manufacturer, WEIZHONG is willing to offer you high quality products.