... size is welcome 317 years production experience 4Customer size welcome key chain1)17 years production experience. 2) Material:Zinc alloy ... , Iron ,Brass , copper etc. 3) Free sample.4) Custom design,quick delivery.Advantage:(1) 17 years of production experience ... to custom coin, please send us detail (including quantity, size, material).Sincerely looking forward to cooperate with you Custom key chain