N52 Various Countersunk Magnets 10-20mm Hobby DIY Industrial Very Strong 🧲
N52 Magnets Countersunk Various 15-20mm Hobby DIY Industrial Magnet Strong 🧲. Grade: N52. Material: Neodymium magnets. (The pull force was tested at 20 Celsius degree, on a polished iron plate with a thickness of 20 mm. ).