This card is custom VIP card , made of aluminum , both side logo. material: aluminumsize :8.5*5.5*0.05cmcraft : stamped , printing, and gravesuface : custom logobackside : ID numberThe ID number is grave , so it is can change , for example No.00001, 00002,0003......The card are can use brass, iron , zinc alloy make it .Custom logo and design are welcome