12Pc Super Strong Neodymium Cup Magnet 1.26" Countersunk Permanent Magnet, The World's Strongest & Most Powerful Rare Earth Magnets by Applied Magnets with Screws: Amazon.com: Industrial & Scientific
DIYMAG Neodymium Magnets with Hole, 100LBS Heavy Duty Round Base Cup Magnets for Wall, Rare Earth Magnets with Countersunk Hole and Stainless Screws for Hanging, Office, Craft-Dia 1.26 inch-Pack of 8: Amazon.com:
LOVIMAG Strong Magnets with Holes, 20 Pcs Small Rare Earth Magnets, Strong Neodymium Disc Countersunk Hole Magnets for Refrigerator, Office, Tool Room, Science Projects(Disc-12x3mm, Hole-4mm): Amazon.com: Industrial & Scientific
Rings Countersunk N52 Super Strong Rare Earth Neodymium Magnet North South Poles | eBay
5/8 x 1/4 Inch Strong Neodymium Rare Earth Countersunk Ring Magnets N52 (10 Pack) for Sale | totalElement
1 x 1/4 Inch Neodymium Rare Earth Countersunk Ring Magnets N52 (4 Pack) for Sale | totalElement
N42 Neodymium Countersunk Disc Magnet - 10mm dia x 2mm thick x 3mm Hole - 2.64lbs Pull