These are brand new in the box. A device that cancels your turn signals for you.Whether you’re an experienced rider, beginner or just an occasional rider, it might happen that you forget to turn off your turn signals. The ST2 Turn System is a small electronic device and the first smart self-cancelling turn signal module that cancels your turn signals after each turn, lane change or roundabout exit. It still allows you full manual control. AND The ST2 Brake Module flashes your brake light when engine braking or down-shifting to warn drivers behind you and drastically reduce the chance of being rear-ended.