ZDYWY 20 Pieces 12 x 4mm with 4mm Countersunk Hole Disc Fastener Magnets Rare Earth Refrigerator Neodymium Magnets - 0.47 inch D x 0.15 inch H with 0.15 inch D Screw Hole: Amazon.com: Industrial & Scientific
ZDYWY 10 Pieces 20 x 4mm with 5mm Countersunk Hole Disc Fastener Magnets Rare Earth Refrigerator Neodymium Magnets - 0.79 inch D x 0.16 inch H with 0.19 inch D Screw Hole: Amazon.com: Industrial & Scientific
N35 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Science, Office and Home - 5mm dia x 4mm thick - 0.66kg Pull - Pack of 200 : Amazon.co.uk: Business, Industry & Science
SYHL L10X10X4 mm (0.4 in X 0.4 in X0.157in) Disc Countersunk Permanent Magnet Fastener,Magnets with Holes,Countersunk Hole 0.157in(4mm)-10pcs: Amazon.com: Industrial & Scientific
N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home - 14mm dia x 4mm thick - 3.4kg Pull - Pack of 10 : Amazon.co.uk: DIY & Tools
Amazon.com: MEALOS Magnets - 200 Tiny Magnets Mini Magnets Small Round Magnets for Crafts - 4mmx2mm Magnets for Miniatures Small Models - Come with a Storage Case : Industrial & Scientific
Amazon.com: 150PCS D4X2mm small round, used in refrigerator science and technology projects, personalized multi-function, multi-purpose small magnet.: Home & Kitchen
Bluelanss 50pcs Extra Strong Magnets 4mm x 2mm Neodymium Magnets Mini Magnets for White Boards, Notice Boards, Fridge, Pin Boards, DIY Pictures, Arts, Crafts Silver: Amazon.com: Industrial & Scientific