The whole set: There are six different metals in a series, which provides a series of different elemental characteristics. Unparalleled quality: Each Square is made of pure metal from 99.6%to 99.9%of the purity, which has true authenticity. Education treasure: providing impeccable resources for students, educators and amateur enthusiasts, helping to understand density, Elements characteristics and cycle . Display process: Each Square has a size tolerance of 1 mm, which means the extraordinary attention to details and accuracy. Multi -functional gifts: provide unparalleled gift options for scientific enthusiasts, collectors, or people who appreciate the beauty of metal. Very suitable for classrooms, office and display cabinets. size: 10 x 10 x 10mm Material: Metal colour: As shown Package Contents: 6 x Elemental Metal Density Square 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 a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.