55 packs contain elements: Li,Be,B,C,Na,Mg,Ai,Si,P,S,Ca,Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Ga,Ge,Se,Sr,Y,Zr,Nb,Mo,Ag,Cd,In,Sn,Sb,Te,I,Ba,La,Ce,Pr,Nd,Sm,Eu Gd,Dy,Er,Yb,Hf,Ta,W,Re,Pt,Au,Pb,Bi Iron box packaging, internal pouches,Cushioned and shockproof packaging for safe transportation Suitable for hobbyists to study, research, teaching, display, scientific research, experiment, specimen, collection, gift. Glass sealed, non-toxic, non-hazardous and safe IMPORTANT NOTE: If the component is broken and does not need to be returned or exchanged, please contact us and we will provide one free replacement. Elements Periodic Table Real, 99.99% Purity, Sealed in Glass Tube, for Gift, Teaching, Display, Collection