Exquisite Display of the Real Periodic Table: Product Size: 6x4.5x0.7 inches/15x11.5x1.8 cm. Unlike other printed versions, our periodic table contains 85 real stable elements. Due to the rarity of some products, they are excluded. The periodic table is made of acrylic acid, with high light transmittance, and the elements inside can be clearly seen. Real Periodic Table: Concrete learning helps children improve their understanding and memory of elements, which is a perfect teaching aid in the classroom. Display your periodic table or school, you can always see it, deepen your memory, and create a very warm learning atmosphere. Periodic Table Gift: The periodic table containing real elements is the perfect gift for science or chemistry lovers. It can be placed on the table or in hand for learning and research. As a decorative display anywhere, it will be pleasing to the eye. Comprehensive Use: The periodic table can be used in classrooms and laboratories to provide students with professional teaching materials to make learning more interesting and suitable as a gift for teachers and students. Note: No harmful elements. Keep it clean with a cloth each time you touch it to avoid leaving marks. Color: Transparent Material: Acrylic Package Contents: 1 x Periodic Table Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.