Each specimen in this set of five metal cylinders has identical mass and radius. Materials included are aluminum, zinc, tin, steel and copper. Includes a storage box and activity guide. Additional Info: Each specimen in this set of five metal cylinders has identical mass and radius. Materials included are aluminum, zinc, tin, steel and copper. Includes a storage box and activity guide. Package Size(L x W x H): 6 X 4.5 X 1 (IN) Categories: Matter, Specimen Sets HTS Code: 9023.00.0000 UNSPSC: 6.01e+007 Country Of Origin: INDIA