100% Brand NewMaterial: Space aluminumColor: as picturePackage: 1pcSize: length*width 4.2cm*3cm, inner diameter about 8mmConversion: 1inch=2.54cm,  1cm=0.393inchesWarm Tip :  Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item.Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated.