-keyrings promotional -materail:copper,alloy -processing:casting,stamping -use:Art&Collectible,gift,crafts -OEM is welcome keyrings promotional details:1) Material & peocess :Zinc alloy, brass,iron,copper (diecasting, stamping)2) Size: 20mm,25mm,30mm,35mm diameter etc (costom size is accepted)3) Thickness:1.5mm,2mm,2.5mm etc(up to customer’s request)4) Electric-plateing:gold,anti-gold,silver,anti ...