Heater Immersion-EIS-PH0436 offers a thoughtfully designed, durable resource for hands-on learning. Heater Immersion specifically designed for use with metal block calorimeter 12 volts, 50 watts Heat resisting insulation, terminating in 4mm sockets Total length of item is approximately 21.5 inches Battery measures 4 inches long, wires each measure 17.5 inches Heater Immersion specifically designed for use with metal block calorimeter. Features heat resisting insulation, terminating in 4mm sockets. 12 volts, 50 watts. Battery measures 4 inches long, wires each measure 17.5 inches. Total length is approximately 21.5 inches.