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10 Piece Slotted Mass Set, 1000g - Zinc Casted - Includes 9 Weights (100g Each), one Hanger (100g) - Eisco Labs: Amazon.com: Industrial & Scientific
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Slotted Mass Set with Weight Hanger: Science Lab Biology Classroom Supplies: Amazon.com: Industrial & Scientific
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Mass Hanger with Top Hook, 20g - Premium Brass - Spare or Extra Parts for Slotted Masses Weights and Sets - Eisco Labs: Amazon.com: Industrial & Scientific
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Eisco Labs Stainless Steel Mass and Hanger Set - 4 Slotted 50g Weights and Hanger, Total 250g - Walmart.com
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