Plastic Stackable Weight Set of 54
American Scientific
SKU: ASC-5155-00
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Set of 54 Includes twenty 1 g (blue), twenty 5 g (red), ten 10 g (yellow), and four 20 g (green) weights. These colored and coded stacking masses help children see mass relationships at a glance. Each color represents a different thickness and mass.
Includes plastic storage box.