N35 Neo Pot, Bright Zinc Plated, 10mm Dia with M3 Hook having a 7mm I/Dia. These Neodymium Pot Magnets are Grade N35, working up to 80°C and have three layers of surface coating (Ni-Cu-Ni) providing an attractive, high-quality, anti-corrosion finish. These magnets are ideal for hanging items in a variety of areas around the house/garage/warehouse, as well as retail & exhibition displays. The pot design ensures no flux leakage which gives such high pull strength. Pull strength can vary significantly as a result of surface conditions, direction of pull, type of steel, & surface coating thickness. The values stated are theoretical, based on a clean plain mild steel plate of sufficient thickness such that there is no flux leakage from the back face of the plate.