10 Elements included 0.59 inch: Tungsten(W) + Titanium(Ti) + Copper(Cu) + Iron(Fe) + Chromium() + Bismuth(BI) + Aluminum(AI) + Zinc() + Antimony(Sb) + Carbon(C) Crisp and clean lettering, laser engraved, having the information from the periodic table collectively printed on two sides of each Square Laser clearly marked information, such as: symbol, atomic number, density, name, purity, , atomic mass Smooth surface. Straight and sharp corners and edges, flat sides, obvious lines on each side Engraved Elements , magnets can't stick. Perfect for any curious mind. Great teaching aid. Specification: Square size: 15 x 15 x 15 mm Purity: 99.95% 10 Elements : Tungsten(W) + Titanium(Ti) + Copper(Cu) + Iron(Fe) + Chromium() + Bismuth(BI) + Aluminum(AI) + Zinc() + Antimony(Sb) + Carbon(C) Material: Metal colour: As shown Package Contents: 1 set x Elements Square sets 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.