Hztyyier Laboratory Weight Set, Metal Mass Pieces with Plastic Storage Box, High Precision Balance Scale Weights for Physics Science Experiments, 100g-500g

Selected high-quality materials, using high-quality metal to create a more and corrosion-resistant bracket. High calibration accuracy, and accurate data, accurate weight weight, and stored in the weight box to avoid oxidation. The tray is made of plastic material with strong anti-fall ability, which can avoid the left and right imbalance caused by accidental damage. Streamline design, more beautiful appearance, without affecting function, and avoid scratching fingers. You can choose a combination of 100 grams or 500 grams to meet the different precision needs of the laboratory.