Blue Point: MRB5: Round Magnetic Stainless Steel Bowl with center magnet.
Master Magnetics Ceramic Round Base Magnet with Eyebolt
Master Magnetics Ceramic Round Base Magnet - 2.618
19mm dia x 8mm thick x M5 thread hole N42 Neodymium Pot Magnet
Eriez - Plate Magnets
ProMag Flexible Round Magnets, 0.5-Inch, 50-Pack
Master Magnetics Ceramic Round Base Magnet with Bolt
Master Magnetics Neodymium Round Base Magnet with Bolt and Nuts
Master Magnetics Ceramic Round Base Magnet with Bolt
Master Magnetics Ceramic Round Base Magnet - 2.618