FEITONG(TM) Magnetic Wooden Numbers Math Set for Kids Children Preschool Home School Daycare Wood & Magnet New generation product, bigger magnet and more powerful magnetism, solve the tust problem for old generation perfectly, will never rust A great way to learn numbers and to start familiarizing little ones with basic math concepts With magnets, can be easily attached to furniture with iron such as refrigerator, TV box, microwave oven, etc Numbers can be used on refrigerator door while mom is cooking, kids are learning Wooden material with suitable size, very safe