· 【VERY STURABLE】Heavy duty magnets coated with three layers of nickel, copper and nickel to reduce corrosion and provide a smooth finish which greatly increase the longevity of the tool magnets.· 【DESIGN WITH SCREWS】Round magnets with hole are equipped with screws for easy installation and fixed on non metal surfaces that need to be fixed, earth magnets enhance the convenience and flexibility of use.· 【POWERFUL MAGNETISM】 Despite the locker magnets size measure 20x3m（0.8x0.12inch）with 0.2in hole, tolerances: ±0.2mm x ±0.2mm, the strong magnets are still powerfully magnetic to reliably hold metal objects with screws to provide solid fixing and support.· 【MULTI-FUNCTIONAL APPLICATION】Strong neodymium magnets can be used as Cabinets magnets for cabinet magnetic catch , locker magnets for lockers, magnets for fridge, whiteboard magnets and so on.· 【QUALITY GUARANTEED】 Made under ISO 9001 Quality Systems. The Highest Quality Available! 30 Days Money Back Guaranteed!