This 3V conductivity tester demonstrates the electrical properties of various liquids. The item consists of a molded plastic lamp socket mounted on a base with two binding posts for connecting a wire cord. It comes complete with a bulb and glass tumbler. Includes activity guide. Additional Info: This 3v conductivity tester demonstrates the electrical properties of various liquids. The item consists of a plastic lamp socket mounted on a base with 2 binding posts. It comes complete with a bulb and glass tumbler. Includes activity guide. Package Size(L x W x H): 4 X 4 X 5 (IN) Categories: Electricity, Kits HTS Code: 9023.00.0000 UNSPSC: 6.01049e+007 Country Of Origin: CHINA