This item is well made of premium steel with finish for and practical use. These items are used to calibrate digital scale so as to weight things more accurately. This precise calibration set has all of the weights you will need and more! It is suitable for general laboratory, commercial, and educational use. Features - ColorSilver - Material: Steel. - Size: 8.2x5.3x5cm - Package: 100g, 50g, 20gx2, 10g, 5g, tweezers - Glossy weight with marking for science measurement. - Polished, wear-resistant, accurate scale weights to use. - With tweezers to conveniently hold all of the weights for access. - Made of steel with plating, will not rust and defect free. - Suitable for general scientific laboratory, commercial, and educational use. - Note: due to the color deviation of lighting and monitor, there may be some differences between the actual product and the photo. Package list: 1 Set x 200g Precision Steel Scale Weight