The magnet is only protected by a thin layer of nickel

at det udvendige gevind ikke er lavet af rustfrit stål

the pull is not direct

som man ikke kan opnå ved en permanent magnet uden beskyttelse

That is equivalent to an A4 size

BLACK metal magneter, 4-pak Auto-translated (SE) The magnet is only protectedStrong black magnets from Trendform, model BLACK. Perfect for both glass boards and when you need a really strong magnet for the office board. The magnets have an anti slip back so they will stay put on the board and won't slide on a smooth glass board. Color: Black. Strength: approx. 1. 2 kg. Size: 23 x 9 mm. Made with a black metal cap and a strong ferrite magnet. Normally, we don't recommend using ferrite magnets on glass boards, but the anti slip