TSUTA 8Pcs Rubber Coated Magnets, 40LBS Neodymium Magnet Base with M6 Threaded Studs and Nuts, Strong Flag Magnet Mount Base with Black Rubber Coating: Amazon.com: Industrial & Scientific
Coatings for Neodymium Magnets (NdFeB) | Stanford Magnets
6 Pcs Rubber Coated Magnets, 26LBS Neodymium Magnet Base with M6 Threaded Studs | eBay