NCKPRO 5~60PCS 6x30 mm Thick Strong Cylinder Rare Earth Magnet 6mm*30mm Round Neodymium Magnet 6x30mm Small Magnet Disc 6 * 30 mm N35 (Color : 10PCS): Amazon.com: Industrial & Scientific
Large Red Alnico Horseshoe Magnet for High-Temperature, Engineering, and Manufacturing Applications - 30mm x 45mm x 30mm 4.5mm Hole - 11kg Pull - Pack of 10: Amazon.com: Industrial & Scientific
Amazon.com: 12PCS Halloween Skull Refrigerator Magnet Stickers Decor, Day of The Dead Skull Decoration Small Glass Magnetic for Fridge Cabinets Office Whiteboard, 30mm : Everything Else
Amazon.com: OrBheS 5/10/20PCS 30x10x2mm N35 Super Strong Block Neodymium Magnets Rare Earth Magnet 30mm x 10mm x 2 mm NdFeB Sheet Magnet 30 * 10 * 2 mm (Color : 10pcs) : Industrial & Scientific
Amazon.com: Weibo 88 Pieces Whiteboard Magnets Round Magnets Mini Fridge Magnet for Home Schools Offices, Assorted Colors,6 Color,(40 mm-16 pcs,30 mm-72 pcs) : Home & Kitchen