Description 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.-calibration weights Features - ColorSilver-calibration weight kit - Material: Steel. - Size: 8.2x5.3x5cm - Package: 100g, 50g, 20gx2, 10g, 5g, tweezers-calibration weight - Glossy weight with marking for science measurement.-scale weights - Polished, wear-resistant, accurate scale weights to use.-calibration weight tweezer - With tweezers to conveniently hold all of the weights for access.-calibration weights set - Made of steel with plating, will not rust and defect free.-chrome plated electronic scale - Suitable for general scientific laboratory, commercial, and educational use.-calibration weight high precision and accuracy - Note: due to the color deviation of lighting and monitor, there may be some differences between the actual product and the photo.-balance calibration weight Note: due to the color deviation of lighting and monitor, there may be some differences between the actual product and the photo.-steel scale calibration weight Made of steel with plating, will not rust and defect free. -weight test scale set With tweezers to conveniently hold all of the weights for access. -weights tweezers Polished, wear-resistant, accurate scale weights to use. -weight calibration scale Glossy weight with marking for science measurement. -scale calibration weight set