Features:1. Periodic Table: Concretized learning helps children enhance their understanding and memory of the elements, an ideal teaching tool in the class.2. Made of Acrylic: The periodic table is made of acrylic with high light transmittance, you can clearly see the elements inside.3. Perfect Gift: Periodic table with real elements inside is the perfect gift for the science or chemistry lover in your life.4. Wide Application: The periodic table can be used in classrooms and laboratories to provide students with professional teaching tools, making learning more interesting, and suitable as gifts for teachers and students.5. Note: Does not contain harmful elements. Keep it clean with a cloth every time you touch it to avoid fingerprints.Specification:Material: AcrylicColor: BlackSize: 15 x 11.4 x 2 cmWeight: 600gPackage Included:1 x Periodic Table of ElementsNotes:1. Manual measuring, please allow 0.5-2cm error, thank you.2. Color may vary due to different monitors.