About This Contains multiple precision calibration weights - 1 x 500g, 1 x 200g, 2 x 100g, 1 x 50g, 2 x 20g, 1x10g. Total Set of Weights: 1000g. Made of carbon steel with a chrome-plated, mirror-polished surface for precision and corrosion resistance. Comes with 1 plastic storage case and 1 piece calibration weight tweezer. M2 Class: Tolerance: 10g: ±6mg; 20g: ±8mg; 50g: ±10mg; 100g: ±16mg; 200g: ±30mg; 500g: ±80mg. Function of Precision Calibration Gram: Metric calibration weight for calibrating the weights, or electronic balances and scales. Stainless Steel Anti-oxidation: These calibration weights are made of solid feeling coated metal. Ensure the quality of the weight will not be damaged and can be reused multiple times. Great scale test calibration weight suitable for commercial and educational purposes. Perfect for digital kitchen scale, jewelry scale, diamond scale, precision balance test. Overview Brand : Bekith Color : Silver Recommended Uses For Product : Jewelry, Food, Precision balance Special Feature : Stainless Steel Construction with Chrome Finish and Anti-Oxidation Properties Display Type : LED or LCD