so they work on whiteboards or metal boards

For stability

The intended purpose of this type of magnet would be for projects where more surface contact is needed to hold against when items need to be hung up: more surface points equal an effective bond

We have chosen to call the magnets e-BIZ

Power magnet, Skive 25x7 mm. 3M so they work on whiteboardsNeodymium magnets Permanent magnets Diameter: 2. 5 cm Height: 0. 7 cm Strength: approx. 12 kg. This magnet has an impressive direct pull of 12 kgs. despite only being 25 x 7 mm. These powerful magnets adhere to all magnetic surfaces. SPECIFICATIONS: Strength: approx. 12,000 gr. Material: NdFeB Magnetisation: N42 Gauss: 12900 13200 (1. 29 1. 32 T) MGOe: 40 42 Max. temperaturee: 80C Surface: nickel plated (Ni Cu Ni)