The Elite Sterzo smart steering riser block allows steering up to 34deg while riding your rear wheel trainer. Though ANT+ and Bluetooth communication the Sterzo interacts with compatible apps to give you the most realistic indoor ride possible. Features: Rotating pivot automatically returns to the original straight position when you relax your grip Accommodates tires up to 56mm wide 34deg of movement in each direction Wireless design means you can take and use this riser block anywhere you'd like Anti-slip rubber feet keep the Sterzo securely in place during use Powered by AAA batteries (included)