metal eyelet and washer 1.material:brass,aluminum 2.finish:zinc,chrome,nickel 3.high quality,free sample 4.ISO9001:20 metal nickel plated eyelet with washer factorySize: M1-M20material: brass,aluminum. stainless steel,ironStandard:all kinds of standardsurface finish: plate white zinc,yellow zinc,blue zinc,color zinc,black zinc and black oxide,certificate:ISO2000:2008&GOHSAdvantage:high quality, ...