Amazon.com: Ferrite Ring Magnets with Holes - 1.2 Inch (31mm) Round Disc Donut Magnets - Circle Hole Magnets - Perfect Ceramic Circular Magnets for Crafts and DIY : Industrial & Scientific
5pcs 20mm x 4mm With 5mm Hole Rare Earth NdFeb Neodymium Ring Hole Magnets UK | eBay
The Different Shapes of Magnets and Their Uses - FIRST4MAGNETS® | BLOG | THE WORLD OF MAGNETS
Amazon.com: Ferrite Ring Magnets with Holes - 1.2 Inch (31mm) Round Disc Donut Magnets - Circle Hole Magnets - Perfect Ceramic Circular Magnets for Crafts and DIY : Industrial & Scientific
1/2 x 1/4 Inch Strong Neodymium Rare Earth Disc Magnets N52 (12 Pack) | totalElement
Amazon.com: Ferrite Ring Magnets with Holes,OD40 x ID22 x 8mm Round Disc Donut Magnets,Circle Hole Magnets,Perfect Ceramic Circular Magnets for Crafts and DIY - Pack of 8 : Industrial & Scientific
24 Piece Magnetic Whiteboard Round Holder | CMS Magnetics, Inc.
Master Magnet 10 lb. Round Base Pull Latch Magnets (2-Piece per Pack) 96694 - The Home Depot