Powerful N35/N38/N42/N45/N48/N50/N52 Magnets Rare Earth NdFeB Magnetic Ring Neodymium Magnet - China Strong Ring Magnets, Powerful Round Magnets | Made-in-China.com
Super Neodymium N35 N38 N40 N42 N45 N48 N50 Permanent Magnets for The Automotive Usage - China Magnet, NdFeB Magnet | Made-in-China.com
Amazon.com: Applied Magnets® 1-pc, Grade N42, Strong NdFeB Neodymium Magnet Ring, 3" OD x 1.5" ID x 1/4". : Industrial & Scientific