HIGH-QUALITY: Our Calibration Weights use steel chrome plating manufacturing process, the workmanship is fine. Super mirror polished, smooth and -resistant. WEIGH SCALES CALIBRATION: 7 PCS of calibration weights include 1g, 2g, 5g, 10g, 20g, 50g, 100g, a total of 188 grams. Various scales for precise measuring. Enough quantity for your use. WIDE RANGE OF USE: Our scale calibration weights suit for general laboratory, commercial, educational use. Such as digital pocket scale, jewelry carat scale, diamond scale, precision balance test. ACCURATE MEASUREMENT: These small weights are useful to test the accuracy of scales, keeping your scale calibrated. Making your experiment more effective. WHAT YOU GET: 1g*1, 2g*1, 5g*1, 10g*1, 20g*1, 50g*1, 100g*1, The 7 PCS Calibration Weights is a must-have accessory for anyone using digital scales, scales, or jewelry scales. Designed with high precision and accuracy in mind, this carbon steel weight set ensures reliable and consistent measurements every time. High-quality material: bright and clean , wear-resistance and durability Accurate measurement: These small weights are useful to test the accuracy of scales. Anti-static and anti-. Scope of application: Digital pocket scale, jewelry carat scale, diamond scale, precision balance test. 1.Clean the dust with a clean cloth before. 2.Calibration weights not be placed in a wet, dusty environment. Colour:Silver Material:Metal Package Contents: 7 x Weights Only the above package content, other products are not included. Note: Light reflection 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.