Accurate gadget for your weighting!<br>This is a must have for anyone with a pocket scale. This precession calibration set has all of the weights you will need and more! Made of Nickel-plated steel， this weight is ly not rust and defect free.                                    Features                New in Box<br>    Top quality， largest selection， best value<br>    Smooth surface<br>    The tweezers is Convenient to hold all of the weights for quick easy access<br>                                                            Specifications                        Plastic storage case     3.15 x 2.07 x 1.38inch / 8 x 5.3 x 3.5cm (L x W x H)    <br>          Material     Nickel - plated steel    <br>          Class     M2    <br>          Permissible Error     + / - 0.003g    <br>          Quantity     1 x 50g， 2 x 20g， 1 x 10g， 1 x 5g， Together 105 g    <br>          Color     Silver    <br>          Total Weight     145g    <br>                                                             Package Includes                1 x Plastic Storage Case <br>    1 x Tweezers<br>    1 x 50g Calibration Weights<br>    2 x 20g Calibration Weights<br>    1 x 10g Calibration Weights<br>    1 x 5g Calibration Weights<br>                                                            Extra Info            Note: 1kg = 35oz = 2.2lb = 1000g