Boston Xtra magnets are 2-3 times as strong as standard office magnets

Very strong pot magnet with rubber coating with a piece of plastic on top

as they work simply with distance)

but it's still more than enough for most people's needs

where on provides direct contact with the magnet

Ferrit magnet, Skive 30x5 mm. boardmarker mix Boston Xtra magnets are 2-3Ferrite magnets Raw magnets Diameter: 30 mm Height: 5 mm Strength: approx. 900 gr. Choose ferrite magnets when the carrying capacity in relation to the size is not so important. Ferrite magnets are made to be used indoors and outdoors. They withstand temperatures up to 250C and down to 40C. Remember that magnets are not toys and must not be swallowed due to choking hazard. Magnets should always be kept out of reach of small children. Caution: Since