This is the Thermoelectric Motor Cooler in Black from Muchmore Racing. Works like a heat pump to dissipate heat from RC motors When 12V current is applied to module, heat transfers from one side of the thermoelectric module to the other-cold side is attached to the heat sink Capable of reducing motor temperatures to near sub-zero levels Thermoelectric Motor Cooler in Black 12V power source Size: 2.0 x 2.40 x 2.83" (52 x 58 x 72mm) Weight: 6.3lbs (178g) Amp draw: 3.0-3.8A jxs 3/11/08 jml 5.20.08 ir/jxs