Suitable for Digital Jewellery Scale, General Laboratory, Commercial, and Educational,suit for digital pocket scale, jewelry carat scale, diamond scale, precision balance test [Good material]: steel ,steel construction of calibration weight for stability, resistance to , low magnetic susceptibility [Calibration weight set]:1 x 100g,1 x 50g,2 x 20g,1 x 10g, 1 x 5g, 2x2g, 1x 1g, 1x500mg, 2x200mg, 1 x 100mg, 1 x 50mg, 2 x 20mg, 1 x 10mg [Come with a tweezer]: anti-static, more convenient when picking calibration weight Shiny and elegant appearance,Exquisite packaging maintains precision Color: Silver Material: steel Permissible Error: +/- 0.003g Package Contents:1 x Calibration Weights Set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.