1.material : iron 2.color ：nickel 3.inner diameter : 15mm,20mm,25mm,32mm,38mm,50mm,63mm,75mm 4.wire diameter : 2mm, 3mm 5.MOQ : 10000pcs packing :３00pcs/bag payment : TT , payment before shipping the goods . Shiping method ：we can help you export the goods , send by air /by sea /by express (DHL ,TNT ,UPS ect.)