Product R-M-19-8, Ø19 mm × 25 mm magnet with M8 thread
MUTUACTOR 2PACK Powerful Rare Earth Neodymium Cup Magnet with M8 Male Threaded Stud,Heavy Duty Magnetic Mounting for Safty Camera, Lighting,Tools and Other Brackets: Amazon.com: Industrial & Scientific
48mm dia Neodymium Clamping Magnet with M8 Eyebolt - 90kg Pull
Product R-M-25-8, Ø25 mm × 25 mm magnet with M8 thread
Magnetic system rubberised M8 (626980000) | Metabo Power Tools