A quick flip of the three position (Hi/Lo/Off) switch creates warm grips, for a longer more comfortable ride, no matter how low the thermostat dips. The flexible mylar backed heating elements attach discretely under the grips on any style bike. Right and left heaters are calibrated differently for maximum heat control, so no throttle-side resistor is needed to equalize temperature. Includes everything needed for installation: grip heating elements, two stage metal toggle switch, hardware, tie wraps and instructions. For 12V systems. 3 amps/40 watts.