The NR-N99 Persuader-class droid enforcer, colloquially known as the Corporate Alliance tank droid, CAD and the snail tank, was a tank droid constructed by the Corporate Alliance at first to silence its opposers and later to combat the Alliance and the Horde. The tank droid was a six-meter tall automaton with a huge, central drive motor for locomotion supported by four small outrigger wheels. It could also roll on its single traction drive tread. The tank droid was also equipped with a pair of large outrigger arms connected to either side of the drive motor which could be armed with almost any weapon. The Persuader-class's front featured several sensors above its twin photoreceptor eyes. Because of its forward drive motor, the tank droid was not an especially maneuverable vehicle and was very easy to engage when being flanked. To compensate for this, the tanks deployed in tightly packed waves, forming a wall of armor. At a speed of 60 kilometers per hour, the tank had no trouble ramming through walls and mowing down obstacles in its way. Civilians particularly feared the NR-N99 because unlike the IG-227 Hailfire-class droid tank and OG-9 homing spider droid, which would generally avoid civilian targets, the tank droid would simply crush everything in its path with merciless precision.