This round base neodymium magnet has 39 lb holding power. The countersunk hole is for #10 screw.
This neodymium round base magnet is made of a super strong neodymium magnet encased inside a chrome plated steel cup. The neodymium magnet is bonded inside of the cup with adhesives. This design forms a magnetic circuit which triples the holding force to 39 lbs! At the same time, the steel cup also protects the magnet from being damaged when frequently used. The countersunk hole on the magnet is provided for easy use.
The holding power of 39 lbs is under the direct contact with the steel which is at least 3/4" thick.
The applications of this round base magnet include magnetic holding, lifting, antenna Mounting, positioning, retrieving and much more.
The round base magnets are also known as magnetic cup holders or magnetic cup assembly.