N42 Neodymium Countersunk Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 10mm dia x 5mm thick x 3.2mm c/sink - 2kg Pull - North - Pack of 100PERFECT FOR DIY. Ideal for furniture fixings, hanging artwork and keeping doors and drawers closed, countersunk magnets have a central hole which allows them to be fixed to non magnetic surfaces with a screw. EASILY FIXED IN PLACE. 3mm countersunk screws required for fixing. CORROSION RESISTANT PREMIUM COATING. Coated with three layers of nickel, copper, and nickel to reduce corrosion and provide a smooth and clean finish. STRONG RARE EARTH MAGNET.