Strong Neodymium Rectangular Bar Pot Magnets with Counter Countersunk Hole
A Mounting Magnet is a permanent magnet encased in a steel shell, which is sometimes called a pot or a cup, hence it also called "Pot Magnet" or "Cup Magnet". These magnetic assemblies are built with neodymium disc magnets embedded in a steel pot. The steel casing creates a strong vertical magnetic pull force (especially on a flat iron or steel surface), concentrating the magnetic force and directing it to the contact surface. Pot magnets are magnetized on one side and the other side can be fitted with screws, hooks, and fasteners to fixed products.
ALB Materials Inc supply several types of mounting magnets(A, B, C, D, E, F, G, H, and R). Below are the shape and product list.
https://www.albmagnets.com/mounting-m...