Rubber Coated Neodymium Pot Magnet - Diameter 88mm x 35mm with Nylon P Clamp D_29mm The fitting screws are also

The fitting screws are also stainless steel and included with the steel plates but the separator bar components are sold separately

They are sometimes used to collect metallic objects and swarf in commercial premises or in other cases are used for the purpose of conditioning water

sometimes anchored to the ocean floor

This ferrite magnet has a  magnetic flux reading of  1982 Gauss and a pull force of  9 kg

If you want a lower profile on the weekend

Rubber Coated Neodymium Pot Magnet - Diameter 88mm x 35mm with Nylon P Clamp D_29mm The fitting screws are alsoMagnetic Product Description: This rare earth pot magnet has a diameter of 88mm, a total height of 35mm with a nylon p clamp, and the closed loop is 22mm. This cable mount magnet has a pull force of 42kg. It is identified by the AMF magnet part number RCND88P.