The HandCuff allows you to lock your bikes to the RidgeBack and SwingDaddy. Comes with an additional SKS Lock Core to match the lock on your SpeedKnob.
They say that every journey begins with a single step, but when that journey is related to exercise, that first step can sure be a doozy. It can be life-changing, however, and there's no better machine to take the plunge with than with the Roll.