1. WEIGH SCALES CALIBRATION: Set includes 7 pieces of calibration weights: 1g, 2g, 5g, 10g, 20g, 50g, and 100g, totaling 188 grams. Multiple weight options for precise scale calibration and accurate measurements. 2. HIGH-QUALITY CONSTRUCTION: Made using steel with chrome plating for durability. Smooth, corrosion-resistant surface with a mirror-polished finish for long-lasting performance. 3. PRECISE AND RELIABLE: Designed to verify scale accuracy and maintain proper calibration. Ideal for ensuring consistent measurement results in various applications. 4. VERSATILE APPLICATION: Suitable for use in laboratories, commercial environments, and educational settings. Compatible with digital pocket scales, jewelry scales, carat scales, diamond scales, and precision balances. 5. WHATS INCLUDED: 1g (1 piece), 2g (1 piece), 5g (1 piece), 10g (1 piece), 20g (1 piece), 50g (1 piece), 100g (1 piece), and user guide.