5x Strong 18mm x 5mm N48 Neodymium Disc Magnets Heavy Duty Fastener Rare Earth | eBay
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Ferrite Ring Magnets with Holes - 1.26 Inch (32mm) Round Disc Donut Magnets for Refrigerator Fridge, Science Projects, Crafts, Around The Office (Pack of 40) : Amazon.com.au: Home Improvement