Disc magnet 4 x 1,5 mm, Nickel-plated - supermagnete.dk
NdFeB N45 N45SH Magnets - ALB Materials Inc
Round Disc Magnet Ø 80 x 20mm Neodymium N45 (NdFeB) Nickel - Force (Strength): 320kg - Circle Magnets - Super Strong Magnets for Industry and Home : Amazon.co.uk: DIY & Tools