1324 Round Stacking Mass Set
Excellent for teaching weighing concepts! Mass sets in available in both square and round shapes. Molded from durable plastic with recesses so the masses are stackable. They are also color coded to correspond with the value of each mass. The weight is also molded into the top of each piece. 52 pieces: 40-1gm masses, 8-5gmmasses, 4-10gm masses.
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