PREMIUM QUALITY MATERIAL: Constructed from steel, these calibration weights are designed for stability and resistance to damage. Utilizing advanced technology, each weight is crafted for precise calibration, ensuring high accuracy for all your measurement needs. CONVENIENT PORTABLE STORAGE: Encased in a compact plastic box with a protective sponge lining, this calibration weight set is organized and easily accessible. design not only protects the weights but also minimizes noise, making it ideal for quiet environments. VERSATILE WEIGHT OPTIONS: The kit includes a diverse range of weights (1g, 2g, 5g, 10g, 20g, 50g, 100g, 200g, 500g), with multiple pieces for commonly used weights. This variety allows for flexibility in calibration tasks, catering to different scales and precision requirements. BROAD APPLICATION: Ideal for calibrating digital and jewelry scales, as well as balance scales, these weights are perfect for a wide array of uses including physics experiments, commercial purposes, and everyday household tasks. Their versatility makes them indispensable in various settings. Color: red Material: Plastic + Steel Package Contents: 1 set x Steel 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.