Warm tip: The color of tweezers will be sent at random, we do not accept the specified color, thanks for your understanding. Details: *Calibration weight for re-calibrating or testing digital scales *Suitable for general laboratory, commercial and educational use *Carbon steel with chrome finish *This calibration weight set contains: 1 x 50g, 2 x 20g, 1 x 10g, 1 x 5g *Permissible Error: +/- 0.003g *Weight Color: Silver (As pictures show) *Total Set of Weights: 105g Specifications: 1 Set(=5pcs )Includes Following Sizes: 1 x 50g Calibration Weight 2 x 20g Calibration Weights 1 x 10g Calibration Weight 1 x 5g Calibration Weight Package Contents: 1 x 5Pcs Set Precision Calibration Weights 1 x Plastic Storage Case 1 x Tweezers Notes: 1,Different scales need different sizes of weights to calibrate them. Please make sure you are taking the correct size weight for the scale you would like to use it with. 2,The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.