1) Material: iron 2)size: 15mm 3)Color:nickel,antique brass,gun metal 4)MOQ: 10000set... 5) past oeko-tex material:brass,iron and others 1.Material: iron, copper, aluminum, plastic, etc. 2.Color: silver, golden, anti-brass, etc 3.Size: mostly 3.5mm, 4mm, 5mm to 20mm, also other sizes available 4.Color: silver, golden, anti-brass, etc. 5.Usage: on shoes, bags, garments, caps, etc. 6.Sample ...