1,place of origin: China,Shanghai 2,material:stainless steel 3,hexagonal or rectangular 4,high quality,long life time SSCE2042 Stainless Steel Wet Film GaugeThese hexagonal stainless steel wet film gauge is made of stainless steel, which are long lasting and reusable,which are supplied in a range of thicknesses measuring up to 2000um. Measurement Range: 20-700um 25-2000um 20-10000um