Specification:**100% Brand New And High QualityMaterial:Stainless SteelSize:Fixed edge Length*Width*Height: 3.5 * 3 * 2.5cmButton Length * Width: five * 2.5cmError: 1cm**Conversion: 1inch=2.54cm, 1cm=0.393inch**Kindly Tip : 1. Please be reminded that due lighting fixtures effects, monitor's brightness/contrast settings etc,there can be some slight differencesin the color tone of the website's photo and the particular item. 2. Item Measure through hand, it might be 1-3cm different, your variety figuring out can be much appreciated.**About size:1. Please test the scale chart carefully earlier than you purchase the item, whenever you don't know learn how to desire size, please contact our customer service2. Please allow 2-3cm differences because of handbook measurement. (1cm=0.39inch, 1 inch=2.54cm)3. Choose the larger length in case your length between two sizes.