Yeah Racing Hackslider mini gyro V3

Hold that perfect drift angle combined with high speeds with this Hackslider mini gyro V3 from Yeah Racing, pre-loaded with a customised firmware for Drifting. It comes with aluminium Heat-sink case for high efficiency cooling and features adjustments to suit every servo on the market, ranging from analog to digital servos and you can also reverse the direction which the gyro acts. The gain (or sensitivity) can be adjusted on the fly for drifters with transmitters featuring more than three channels and also can be adjusted on the gyro itself. With the super small footprint, you will be able to mount this gyro anywhere and create very clean installs.

Source: Yeah Racing [yeahracing.com]