• Round magnet with hole,Three-layer electroplating axial magnetization, size?diameter 10 mm x thickness 5 mm with 4 mm Hole, can be fixed with screw • Widely used ring magnets in your daily life or work: crafting, jewelry, photos, greeting cards displaying, even create DIY magnet projects and more. • Multifunctional strong small magnets disc?Can be used as tool storage, locker magnets, magnets for fridge, calendar, map, kitchen,Billboard, Dry Erase Board in Home, office, classroom, school, science, adults, funny decorative. Perfect size for easy use