Specifications: Sizes: 7 CM * 4CM Thickness: 2 CM Material: EVA material, magnet and felt fabric Quantity: 84/72/60/48/36/24/12/8/4/1 Pieces Package includes : 84/72/60/48/36/24/12/8/4/1 x Magnetic Whiteboard Eraser Features: Made of foam and felt, lightweight and durable, can serve you a long time Lightweight and soft erasers, can be applied in classrooms as daily necessary. Erasers with soft magnetic can stick to metal surfaces like metal whiteboard, chalkboard and so on. To clean the whiteboard easily and effectively, you could press the erasers a little bit harder. Contains soft magnetic,it can stick to metal chalkboard and surfaces easily, help to save space and can be cleaned repeatedly, wash with soap and water, air dry Compatible with white/ black boards, dry erase sheets, melamine, porcelain and glass surfaces, to clean the whiteboard effectively, you need to press the erasers a little bit harder. Material: the product is made of EVA material, magnet and felt fabric (3 layers of processing), so you can be relieved when using it, and it can stick to metal chalkboard and white board because of the soft magnetic. Large amount: there are many pieces office erasers, a large quantity that is wonderful for you to use a long time, you will get 4 colors from this package, red, yellow, blue and green, use different color as you like. Versatile usage: these small magnetic erasers can work with chalkboards, whiteboards, dry erase boards, and other types of white boards, widely use in school, workplace and home, this product is also washable with soap and water, so you can use them in many times. Cute design: this magnetic small eraser is designed as a bone shape, which is cute, appear for the child to use them, this kind of dog bone shape is also convenient for you to hold in hand and agile to operate. Small size: the dimension of this product is 2.76 x 1.57 x 0.78 inch, it is a little one but right there for kids, students and teachers, easily to hold for small hands; When you wash it, a little soap is enough, dry fast placed in the air.