FireKingdom 2010 g Precision Nickel-Plated Steel Electronic Balance Scale Calibration Weights Kit Class: M2 Permissible Error: +/- 0.003g Box Dimensions: (18.8 x 12.6 x 8.9)cm (L x W x H) The tweezers is Convenient to hold all of the weights for quick easy access Package Includes:1 x Box ,1 x Tweezers,1 x 1000g Calibration Weights,1 x 500g Calibration Weights,1 x 200g Calibration Weights,2 x 100g Calibration Weights,1 x 50g Calibration Weights,2 x 20g Calibration Weights,1 x 10g Calibration Weights,1 x 5g Calibration Weights,2 x 2g Calibration Weights,1 x 1g Calibration Weights