2 Way reflecting device Material: PMMA, ABS and metal spider stand Accords with FMVSS125 standard and passed DOT authentication US patent : 6718670B2 Packing: each one in a plastic box then 20 pcs in one carton N.W.: 21.0KGS G.W.: 22.0KGS M.: 450กม360กม220mm 14400pcs in one 20' container